The victory of nationalist Karol Nawrocki in Poland's presidential election looks set to strain relations with Ukraine and embolden Donald Trump-inspired conservatives in central Europe, analysts and diplomats said on Monday.

Poland and the U.S. are close allies, and there are 10,000 U.S. troops stationed in Poland, but Tusk and his partners in the past have been critical of Trump. Nawrocki, however, has a worldview closely aligned with Trump and his Make America Great Again ethos.

Karol Nawrocki, the conservative Trump-backed candidate in Poland's runoff election, has narrowly won the presidential race. Charles Kupchan, a senior fellow at the Council on Foreign Relations, breaks down how the election results may affect NATO and Poland's relationship with the European Union.