Denmark has temporarily banned civil drone flights in its airspace as it prepares to host a top European Union meeting on defense and the war in Ukraine, and after a surge of suspicious drone activity at several airports and military sites last week.

Ukrainian President Volodymyr Zelenskyy will meet with European leaders in Copenhagen on Thursday, according to a press release from the Danish prime minister's office, with the allied response to Russia's ongoing full-scale invasion set to top the agenda.