Poland has elected Karol Nawrocki, a conservative historian and staunch nationalist, as its next president in a closely watched vote that signals a resurgence of right-wing populism in the heart of Europe.

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.

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.