"If the U.S. decides not to provide Ukraine with what is needed, it would be a serious setback for Ukraine and for Europe and for NATO," Frederiksen told a joint press conference with European Commission President Ursula von der Leyen in connection with Denmark's takeover of the EU Presidency.

Denmark launched its presidency of the European Union on Thursday with a call for Europe to unite to take on war in Ukraine and chaos caused by U.S. President Donald Trump's global tariff hike which are likely to mark the Nordic country's six-month term at the helm of the world's biggest trading bloc.

Ukrainian President Volodymyr Zelenskyy is meeting Danish Prime Minister Mette Fredericksen and European Commission President Ursula von der Leyen. DW has the latest.