() President Donald Trump will host newly elected Polish President Karol Nawrocki at the White House on Wednesday amid continued efforts to broker a peace deal in Ukraine.

Trump endorsed Nawrocki, a former amateur boxer who represents Poland’s conservative Law and Justice Party.

Russian aggression is expected to be a major topic of the meeting, with Nawrocki expected to stress the need for a strong U.S. presence in Poland to deter Russia.

Poland has supported Ukraine in the war, but Nawrocki has echoed some of Trump’s criticisms of Ukrainian President Volodymyr Zelenskyy.

The issue will take on even more importance as hopes for a peace deal have dimmed. Trump promised on the campaign trail that he would bring an end to fighting in days.

However, negotiations have dragged on, and despite the initial optimism following a summit with Trump and Russian President Vladimir Putin, Trump has suggested the fighting may continue.

The prospect of continued conflict has heightened anxiety in Europe, especially in countries that border Russia and fear they could be next in line if Russia’s aggression goes unchecked.

Nawrocki’s role in government is largely symbolic, with most power held by Poland’s parliament. However, the president can veto legislation and serves as Poland’s representative abroad.