By Bosphorus News Geopolitics Desk
Guterres ruled out a Cyprus 5+1 during United Nations General Assembly week, Türkiye sent Moscow and Kiev a Black Sea shipping memorandum, and Turkish authorities intervened after fund defaults hit Borsa Istanbul.
Cyprus and Aegean
Guterres says no 5+1 at UNGA after Cyprus leaders meet
United Nations Secretary-General António Guterres said there would be no 3+1 or 5+1 Cyprus meeting on the sidelines of the UN General Assembly, arguing that more preparatory work was needed before another expanded meeting could produce results. "We cannot repeat the mistakes of the past," he said.
Turkish Cypriot leader Tufan Erhürman and Greek Cypriot leader Nikos Christodoulides met Thursday under UN auspices to discuss confidence-building measures, methodology and the substance of the Cyprus issue.
Christodoulides said he presented new ideas that could produce results in the coming days. Erhürman confirmed that new proposals had been put forward and described the meeting as relatively better than the previous one, but said the conditions for another 5+1 had not yet been created.
Erhürman travels to New York on Sept. 23 for separate meetings with Guterres and the UN Secretary-General's Personal Envoy María Ángela Holguín, which he said should provide greater clarity on the roadmap for the next phase.
Türkiye challenges military presence during Mitsotakis' Meis visit
Türkiye's Defense Ministry objected to the military presence during Greek Prime Minister Kyriakos Mitsotakis' recent visit to Kastellorizo, known as Meis in Türkiye, citing its interpretation of the 1947 Paris Peace Treaty. The ministry said the military activity displayed during the visit was incompatible with the island's demilitarized status. Mitsotakis also visited military observation posts on Ro and Strongyli.
The Greek Foreign Ministry rejects Ankara's interpretation, saying Türkiye's demilitarization claims have no basis in international law and that Greece retains the right to take measures necessary for its defense.
Türkiye's Defense Ministry said the relocation of the 51st Commando Brigade had been approved in June, before Mitsotakis' September visit. That chronology does not support presenting the redeployment as an immediate response to his trip.
The dispute adds another legal layer to the Greek-Turkish argument over Aegean marine parks and maritime jurisdiction.
Taçoy says Cyprus-Lebanon cable needs Türkiye's consent
Turkish Cypriot Economy and Energy Minister Hasan Taçoy said surveys and eventual cable-laying for a proposed Cyprus-Lebanon electricity interconnector would require Türkiye's permission.
The project has not reached route selection. The Republic of Cyprus and Lebanon agreed in July to begin a World Bank-supported prefeasibility assessment, with more detailed technical work dependent on the study's findings.
Türkiye's 2014 United Nations filing is narrower than a general claim that waters east of Cyprus are Turkish territorial waters. Document A/68/857 records coordinates for a Türkiye-TRNC continental-shelf delimitation line between 32°16′18″E and 34°48′51.634″E.
The official July announcement places the project at the World Bank-backed prefeasibility stage and does not identify a route. The available documents therefore do not establish which claimed maritime zone a future line would cross.
Black Sea
Türkiye sends civilian shipping memorandum to Russia and Ukraine
Türkiye has sent Russia and Ukraine a draft memorandum aimed at reducing attacks on civilian shipping in the Black Sea, according to a Turkish diplomatic source. The proposal draws partly on the experience of the 2022 grain corridor and follows repeated strikes on commercial vessels.
The move follows Moscow's rejection of an earlier Turkish proposal for a Black Sea truce, after which attacks on civilian shipping continued. Ankara has kept channels open through Hakan Fidan's contacts with both Russia and Ukraine.
Türkiye is participating this week in the Sea Breeze-2026 Naval Commanders Conference in Romania and the Eastern Shield air and drone-defense exercise. The Turkish Navy will hold Denizkurdu-I across the Black Sea, Marmara, Aegean and Eastern Mediterranean from Sept. 20-24, with a Distinguished Observer Day aboard TCG Anadolu on Sept. 24.
Gulf Security
Kalın meets Pakistan security chiefs as Mecca Pact work continues
National Intelligence Organization chief İbrahim Kalın met Pakistan's military chief Field Marshal Asim Munir and Inter-Services Intelligence chief Asim Malik in Islamabad and was received by Prime Minister Shehbaz Sharif.
Turkish security sources said the talks covered the U.S.-Israel war with Iran, Yemen-Saudi tensions and the Mecca Joint Defence Agreement.
Türkiye's Defense Ministry said Thursday that the agreement with Pakistan and Saudi Arabia is based on defense and collective deterrence, is not directed against a third country and does not replace the parties' existing relationships.
The trilateral institutions are still being built and remain distinct from existing Pakistan-Saudi bilateral defense arrangements. The parliamentary and institutional steps required before the pact becomes fully operational remain unfinished.
Türkiye-U.S.
Erdoğan-Trump meeting confirmed for New York
President Recep Tayyip Erdoğan will meet U.S. President Donald Trump in New York during next week's United Nations General Assembly high-level week, U.S. Ambassador to Türkiye Tom Barrack said Thursday. No date or agenda has been announced.
Erdoğan and Trump last met during NATO's July summit in Ankara, where F-35 access and U.S. sanctions on Türkiye were discussed.
No meeting between Erdoğan and Greek Prime Minister Kyriakos Mitsotakis is currently scheduled in New York, although Mitsotakis said Thursday that one could still take place.
Economy
Fund defaults hit Borsa Istanbul as authorities add liquidity
Redemption-payment problems at Turkish investment funds were followed by a sharp selloff Wednesday. The BIST 100 closed 5.54% lower at 13,122.58 after losses exceeded 6% during the session and triggered an index-wide circuit breaker.
Pusula Portföy disclosed redemption-payment defaults in some funds it manages. Tera Portföy reported separate problems in its own funds and changed redemption terms for several products. Those events are distinct from Tera Group's planned acquisition of Pusula, which has not been completed.
The Financial Stability Committee met Thursday morning under Treasury and Finance Minister Mehmet Şimşek. It said the problems were concentrated in funds managed by a limited number of portfolio companies and did not constitute a fundamental or structural risk for Borsa Istanbul.
The Central Bank of the Republic of Türkiye said it would increase one-week repo funding when required, update banks' borrowing limits in the interbank market and reduce collateral haircuts.
The Capital Markets Board imposed trading restrictions and other measures in separate market-abuse investigations. Reuters put the fund pool affected by suspension and liquidation decisions at about TL891 billion in assets and roughly 353,000 investors.
The European Bank for Reconstruction and Development cut its 2026 Türkiye growth forecast to 3.5% from 4%, citing higher energy imports, persistent inflation and risks to tourism and manufacturing supply chains from the Middle East war.
Hormuz and Gulf Energy
Hormuz traffic falls to three ships as Saudi pipeline repairs continue
Only three observed commercial vessels crossed the Strait of Hormuz on Wednesday, down from 12 a day earlier and a 10-day average of about 17. Vessels crossing with Automatic Identification System transponders switched off would not appear in those figures.
Damage to Saudi Arabia's East-West Pipeline is more extensive than initially reported. Satellite imagery and industry sources indicate that three pumping stations were hit. Full repairs could take five to six weeks, although partial flows may resume earlier.
Saudi Aramco has offered additional crude loading through ship-to-ship transfers off Sohar in Oman, providing another outlet for barrels affected by the disruption around Hormuz.
The Central Bank of the Republic of Türkiye has added the regional energy shock to its inflation assessment. Its Sept. 10 Monetary Policy Committee summary, released Thursday, said high and volatile energy prices linked to geopolitical developments create upside risks through energy supply, logistics and transport costs.
U.S. Sanctions
Russia-Iran sanctions package reaches Trump
The U.S. House of Representatives voted 262-159 to accept the Senate amendments to H.R. 5334, sending the Lindsey O. Graham Sanctioning Russia and Iran Act to President Donald Trump.
A House Rules Committee proposal that would have named Türkiye, China, India, Azerbaijan and several other countries as initial tariff targets was rejected 3-7. Another amendment seeking to remove the wider secondary-tariff mechanism was also rejected.
Türkiye is not named as a fixed target in the final congressional text. The bill nevertheless retains a mechanism covering the largest importers of Russian oil or natural gas. Any application to Türkiye would depend on future U.S. determinations and the statutory exemptions if Trump signs the measure.
The package also extends the Iran Sanctions Act through 2031.
Turkic World
OTS security chiefs meet in Baku ahead of Ankara summit
Security council officials from the Organization of Turkic States met in Baku on Thursday. Türkiye was represented by National Security Council Secretary-General Okay Memiş, while Turkish Republic of Northern Cyprus Prime Ministerial Adviser Mehmet Ağa also attended.
Azerbaijani President Ilham Aliyev called for closer cooperation on terrorism, organized crime, cyber threats and critical infrastructure, describing coordination among the security councils as contributing to a common security architecture. The meeting produced no collective-defense commitment.
The security track is one part of the integration process leading toward the Oct. 30 Ankara summit, where institutional, policing, trade, digital and education mechanisms have advanced further than military cooperation.
Türkiye
Uçum says Öcalan will have role in disarmament subcommission
Presidential adviser and Presidential Legal Policies Board Deputy Chairman Mehmet Uçum said Abdullah Öcalan would be given a role in the Disarmament and Strategic Coordination Subcommission. He also expects a National Security Council assessment of the disarmament process in October or November.
No separate institutional decision assigning Öcalan that role has been publicly announced.
Uçum points to April 16, 2028 election scenario
Uçum said presidential and parliamentary elections could be held on April 16, 2028 if parliament votes to renew them with at least 360 lawmakers. Such a decision during Erdoğan's second presidential term would allow him to stand again under Article 116 of the Constitution.
He described April 16, the anniversary of the 2017 constitutional referendum, as a possible date and said Erdoğan would run for president one final time. No election date has been officially announced. AK Party spokesman Ömer Çelik said earlier this week that an election was not on Türkiye's current agenda.
Lebanon
Paris discusses post-UNIFIL security structure as Türkiye seeks role
European and Arab military officials met in Paris to discuss security arrangements for southern Lebanon after the planned end of the United Nations Interim Force in Lebanon mission. The options include international or European support for the Lebanese Armed Forces in training, equipment, intelligence and military advice.
Türkiye remains an UNIFIL contributor. President Erdoğan said on July 30, during Lebanese President Joseph Aoun's visit to Ankara, that Türkiye wanted an active role in initiatives launched after UNIFIL's withdrawal to support Lebanon's sovereignty and security.
Balkans
Thaçi sentenced to 25 years in Kosovo war-crimes case
The Kosovo Specialist Chambers in The Hague sentenced former Kosovo President Hashim Thaçi to 25 years in prison after finding him guilty of war crimes including murder, torture, cruel treatment and arbitrary detention.
Jakup Krasniqi also received 25 years, Kadri Veseli 18 years and Rexhep Selimi 13 years. All four were acquitted of crimes against humanity charges. The judgments can be appealed.
The court said the case concerned the individual criminal responsibility of the defendants rather than the Kosovo Liberation Army or Kosovo's independence struggle. Kosovo First Deputy Prime Minister and acting Foreign Minister Glauk Konjufca called the verdict unfair and undeserved.
Bosphorus Read
The Cyprus file enters UNGA week with less diplomatic room than many expected. Guterres has ruled out another expanded meeting for now, while the leaders move toward separate New York contacts with unresolved questions over crossings, methodology and the next negotiating format. At the same time, disputes over Meis and the proposed Cyprus-Lebanon cable show how quickly political dialogue on the island still runs into wider arguments over treaties, jurisdiction and maritime rights.
Türkiye's Black Sea memorandum is the day's clearest attempt to turn diplomacy into an operational arrangement. Ankara is asking Moscow and Kiev to protect civilian shipping at a time when commercial traffic has again become part of the war. The same week brings Turkish participation in regional naval and air-defense activity, but the diplomatic proposal and the military calendar remain separate tracks.
Security coordination is also widening elsewhere. Kalın's Islamabad meetings come as the Mecca Pact begins building its trilateral machinery, while the Organization of Turkic States is expanding cooperation among national security institutions ahead of the Ankara summit. Neither process has produced a common military structure, but both are moving beyond summit language into standing mechanisms and recurring coordination.
Economic exposure cuts across several of the day's files. Hormuz traffic remains depressed, Saudi bypass infrastructure is damaged, and the CBRT is already treating energy prices as an inflation risk. At home, fund redemption problems forced a liquidity response and fresh regulatory action. Washington adds another layer: Türkiye escaped being written into the Russia-Iran sanctions bill as a fixed target, but the final text still leaves future exposure dependent on Russian energy trade and U.S. implementation.
Lebanon and Kosovo sit at the edge of the same regional picture. Paris is already discussing what could follow UNIFIL, an area where Ankara has said it wants a role, while the Thaçi judgment in The Hague closes one legal chapter without settling the political arguments that continue to surround the Kosovo war.
Sources: United Nations, Turkish Cypriot Presidency, Türkiye's Ministry of National Defense, Greek Foreign Ministry, Republic of Cyprus Ministry of Energy, UN Digital Library, KAP, Treasury and Finance Ministry, Central Bank of the Republic of Türkiye, Capital Markets Board, European Bank for Reconstruction and Development, U.S. House Clerk, U.S. House Committee on Rules, Presidency of Azerbaijan, Kosovo Specialist Chambers, Reuters, AFP, Anadolu Agency, Bosphorus News review and reporting.
Read Yesterday's brief: Eastern Mediterranean Strategic Brief | September 16, 2026.