President Donald Trump indicated the U.S. could increase its military presence in Poland, signaling support for Polish security while meeting with new Polish President Karol Nawrocki at the White House.

Trump also expressed frustration with stalled diplomatic efforts to end Russia’s war in Ukraine, hinting at possible measures if President Vladimir Putin fails to pursue a peace deal.

European allies continue to press the U.S. for details on support for Ukraine’s postwar security guarantees, though both sides remain vague on concrete commitments, Al-Jazeera has reported.