President Donald Trump met with Turkish President Recep Tayyip Erdoğan in Ankara as NATO kicked off its summit amid fresh tension over Trump’s longstanding complaints about European defense spending.

To underline NATO’s military readiness, the alliance unveiled a series of major new procurement efforts and defense projects, presenting them as evidence that the alliance can translate economic strength into concrete capabilities. NATO Secretary-General Mark Rutte said the investments were “money well spent” and that NATO would announce tens of billions in new contracts aimed at deterrence and defense, including work spanning drones, air capabilities and other defense technologies.

Among the announcements, NATO said it would pursue replacement aircraft for its aging airborne early warning fleet. A deal discussed Tuesday would involve Saab supplying up to 10 GlobalEye surveillance aircraft for a 10-nation consortium—an effort framed as both a capability upgrade and an alliance-wide industrial win. NATO also highlighted multinational moves involving transport and surveillance aircraft, as well as additional drone procurement to expand its limited unmanned surveillance capacity.

Meanwhile, Trump again put the spotlight on Greenland, telling reporters that the island—which is self-governing but part of the Kingdom of Denmark—“should be controlled by the United States, not by Denmark.” The renewed demand sparked renewed friction with European leaders, who have repeatedly said sovereignty over Greenland is not negotiable.

The juxtaposition of NATO’s arms announcements with Trump’s Greenland remarks reflected the broader theme of the summit: Europe seeking to reassure the U.S. and maintain alliance unity, even as Trump continues to challenge NATO’s structure and posture.