The 81st session of the United Nations General Assembly (UNGA) convenes at a moment when the international system is experiencing something more consequential than simply an increase in conflicts. The geography of conflict is expanding, while crises once treated as separate are increasingly interacting through military alliances, strategic chokepoints, energy routes and deterrence commitments.

The war in Ukraine is moving closer to the wider European security space, with Poland emerging as the critical threshold between the battlefield and NATO. Further north, expanding American military access to Greenland demonstrates the renewed strategic importance of the Arctic and North Atlantic. In the Middle East, the Iran war remains unresolved, Hormuz remains a major vulnerability, while Yemen has returned to the center of regional geopolitics as the Houthis strengthen their position around Bab el-Mandeb and renew attacks against Saudi Arabia.

These are not parts of a single war, nor is global confrontation inevitable. Something more complex is taking place. Conflicts are becoming connected not simply because they occur simultaneously, but because escalation in one theater increasingly changes security calculations, deterrence requirements and strategic choices in another. The international system is moving from an era of multiple wars toward an age of connected wars.

Expansion of conflict

The transformation is clearest in Europe.

The Ukraine war remains centered on Ukrainian territory, but its strategic boundaries are becoming less clear. Russian attacks close to Poland, repeated Polish air-defense mobilizations and Warsaw’s growing concerns about missiles and drones illustrate how narrow the geographical distance between the Ukraine war and NATO-Russia deterrence has become.

Poland matters because it is where these two strategic spaces increasingly meet.

The Western strategy has been based on a difficult distinction: support Ukraine militarily while preventing direct confrontation between NATO and Russia. That distinction remains, but maintaining it is becoming harder. Western Ukraine is simultaneously Ukrainian territory, a logistical corridor for Western assistance and NATO’s immediate geographical neighborhood.

The escalation ladder is therefore shortening. Russian strikes near Poland generate Polish military mobilization. Polish mobilization activates NATO’s eastern flank. A missile or drone crossing the border could generate pressure for a military response. None of this makes a Russia-NATO war inevitable, but it reduces the strategic distance separating them.

The emerging Greenland settlement adds a northern dimension. It appears to replace the controversial idea of territorial acquisition with expanded and long-term American military access while leaving sovereignty unchanged. The result is the deeper incorporation of Greenland into Western security planning and a renewed focus on the strategic importance of the Arctic.

The strategic geography of Europe must consequently be understood through a much wider security space connecting the North Atlantic and the Arctic with Scandinavia, the Baltic region, Poland, Ukraine and the Black Sea.

Mid East’s connected fronts

The same expansion of strategic geography is occurring in the Middle East.

The Iran war demonstrated how rapidly a regional military confrontation can acquire global consequences. Hormuz connects military escalation directly to energy flows, shipping and the world economy. Yet Hormuz is now only one part of the emerging problem.

Yemen has again become strategically central.

The conflict should be understood through four overlapping layers. The first remains Yemen’s internal struggle, where Houthi territorial ambitions, the fragmentation of their opponents and competition among Yemeni actors shape the balance. The second concerns Saudi security. Renewed missile and drone attacks demonstrate how rapidly the Yemeni theater can become a direct security problem for the Kingdom.

The third is regional. The Houthis maintain an important relationship with Tehran and have benefited from Iranian military and technological support, but Yemen cannot simply be reduced to an extension of Iranian strategy. The Houthis possess their own domestic constituency, political objectives and military calculations. The Saudi-Houthi confrontation therefore has its own logic even as it interacts with the wider regional environment.

The fourth layer is geoeconomic. Houthi activity around Bab el-Mandeb matters much more when viewed alongside instability around Hormuz. The two waterways sit at opposite ends of the energy and trade geography linking the Gulf, Indian Ocean, Red Sea, Suez and Mediterranean.

Yemen is therefore no longer a peripheral conflict. It is becoming a strategic center of the regional crisis.

Poland, Greenland, Hormuz and Bab el-Mandeb appear on different maps, but they reveal the same underlying transformation: geography is returning to the center of international politics, while developments in one strategic theater increasingly shape calculations in another.

Türkiye’s emerging responsibilities

For Türkiye, this transformation is not abstract. Ankara is already confronting concrete choices across almost every one of these theaters. This is why describing Turkish policy simply as balancing is becoming insufficient.

Iran provides a useful example.

Türkiye opposes the expansion of the war against Iran. A prolonged conflict or collapse of Iranian state capacity would generate direct security, migration, energy and economic risks for Türkiye. Ankara therefore continues to emphasize diplomacy and de-escalation.

But opposition to war does not mean alignment with Tehran.

Türkiye is simultaneously seeking to insulate itself from the economic and financial risks surrounding Iran. The recent decision to revoke the operating license of Bank Mellat’s Istanbul branch came amid intensified American economic pressure on Tehran and after Washington sanctioned a Türkiye-based investment bank and affiliated companies over alleged Iran-related transactions.

The broader picture suggests an increasingly differentiated approach. Ankara can oppose the military destabilization of Iran while limiting Türkiye’s exposure to the economic and financial consequences of Tehran’s confrontation with Washington.

Yemen presents a different test.

Renewed Houthi attacks against Saudi Arabia are taking place after the establishment of the Mecca Joint Defence Agreement between Türkiye, Saudi Arabia and Pakistan. This gives the current escalation a significance that previous Saudi-Houthi confrontations did not have for Ankara.

The Mecca Agreement can no longer be discussed merely as a new regional security architecture. It is facing its first serious test of deterrence credibility. Repeated attacks against Saudi territory without a visible response from its new defense partners would inevitably raise questions about the agreement’s credibility.

Foreign Minister Hakan Fidan’s recent statements are therefore important. He emphasized that the members have responsibilities toward one another, that consultations are underway and that Türkiye could meet Saudi military requirements, particularly in technical areas. He also indicated that preparations for the agreement’s secretariat and military headquarters are nearing completion.

The first test need not involve Turkish offensive military involvement in Yemen. A more consequential contribution could be defensive.

Saudi Arabia faces a threat environment dominated by ballistic missiles, cruise missiles and drones. Türkiye has developed capabilities directly relevant to such threats, including radar and early-warning systems, electronic warfare, counterdrone technologies, layered air defense and command-and-control infrastructure.

The Mecca Agreement’s first credibility test could therefore involve deterrence by denial rather than retaliation.

Strengthening Saudi early warning, air and missile defense, intelligence sharing and critical infrastructure protection would demonstrate that attacks against a member produce tangible consequences without turning the agreement into an offensive alliance.

This distinction is also important for Türkiye’s Iran policy. Ankara does not need to treat Houthi actions as Iranian actions, nor does contributing to Saudi defensive capacity require joining an anti-Iran coalition. Türkiye can oppose the expansion of the war against Iran while fulfilling narrowly defined defensive commitments toward Saudi Arabia.

Russia presents Ankara with another version of the same challenge. Türkiye supports Ukraine’s territorial integrity and remains firmly embedded in NATO while maintaining channels with Moscow and seeking to prevent the Black Sea from becoming a direct Russia-NATO military theater. But Poland’s increasing exposure changes the equation. A direct Russia-Poland incident would cease to be primarily a Ukraine question for Ankara and become an alliance-security question.

Türkiye is consequently managing three different strategic responsibilities: maintaining NATO deterrence without closing channels with Russia, opposing a destructive war against Iran while limiting exposure to its consequences, and giving credibility to an emerging defense commitment toward Saudi Arabia without allowing it to become part of a broader regional confrontation.

These responsibilities do not constitute a single strategy toward a single threat. Türkiye increasingly operates through different security arrangements designed for different strategic environments. NATO remains central to its European security. Its national military and defense-industrial capabilities provide greater room for independent action in its immediate neighborhood. The Mecca Agreement potentially adds another layer of security cooperation in the Gulf and the Red Sea.

The result is what might be described as a layered strategic architecture in which different security arrangements operate across distinct geographical theaters, connected by Turkish capabilities without being subordinated to a single geopolitical bloc.

This architecture reflects the central challenge of the age of connected wars. As conflicts become increasingly interconnected, Türkiye must prevent its own security commitments from becoming automatically interconnected as well. Supporting NATO deterrence should not eliminate dialogue with Russia. Opposing the destabilization of Iran should not prevent Türkiye from protecting Saudi Arabia. Supporting Saudi security should not automatically turn Yemen into another front against Tehran.

Türkiye’s geopolitical position gives it considerable room to operate across these different theaters, but it also creates exposure to each of them. The real test will therefore be whether Ankara can maintain the boundaries between its commitments while remaining credible when those commitments are tested.

In an age of connected wars, strategic autonomy will increasingly depend not only on freedom of action, but also on the capacity to prevent one conflict from determining Türkiye’s choices in another.