The discussions will come as Kyiv tries to refocus Trump's attention on the conflict with Moscow and as Trump has publicly mused about Syria's role in the Middle East.
The repeated incursions have prompted questions all along NATO's eastern flank as to how allies should handle the threat of Russia's long-range strike capabilities, which are continuously evolving with deadly effect during Moscow's war in Ukraine.
Two German fighter jets were scrambled to the Romanian-Ukrainian border on Tuesday night in response to a Russian drone attack in the frontier region.
Russian President Vladimir Putin's continued refusal to accept a ceasefire is "complicating" efforts to reach a peace deal, Ukrainian President Volodymyr Zelenskyy said.
Polish and Swedish military aircraft were scrambled in response to a large Russian drone and missile attack launched across Ukraine on Sunday night.
NATO leaders were gathering in the Netherlands on Tuesday for the start of a historic two-day summit that could unite the world's biggest security organization around a new defense spending pledge or widen divisions among the 32 allies.