U.S. President Donald Trump said he had "tested" NATO allies during the opening day of the alliance summit in Ankara, Turkey [1].

The remarks signal a confrontational approach to the alliance's leadership, emphasizing the U.S. administration's demand for increased defense contributions and strategic alignment on Iran.

Trump targeted the burden-sharing practices of the 31 member countries attending the summit [2]. He said allies failed to meet the target defense-spending level of 2% of their gross domestic product [2]. During a video interview, Trump said, "I tested them. I’m going to see how they react" [1].

While criticizing the broader alliance, Trump praised Turkish President Recep Tayyip Erdogan [1]. This alignment occurred as Trump said he was disappointed that NATO members had not backed his planned military action against Iran [1].

The tension at the summit reflects a broader push by the U.S. to pressure member states into increasing their financial commitments to collective defense. The president's focus on Iran further complicates the summit's agenda, as he sought signals of support for his specific security objectives [2].

DW News analyst Teri Schultz said, "Trump’s remarks set a confrontational tone right at the start of the summit, putting allies on the defensive" [1]. Other observers noted the friction between his praise for Erdogan and his accusations against the alliance. Aylin Matlé of DW News said, "He’s praising Erdogan while simultaneously accusing NATO of not backing his Iran plans – a contradictory message that could undermine alliance cohesion" [1].

"I tested them. I’m going to see how they react."

The U.S. approach at the Ankara summit indicates a shift toward transactional diplomacy within NATO. By linking defense spending targets to strategic support for unilateral actions against Iran, the administration is leveraging the alliance's security guarantees to extract specific political and financial concessions from member states.