Ukrainian President Volodymyr Zelenskyy called for solidarity on Thursday, a month since Russia's invasion began, warning he would see who sells out at summits in Europe where bolstering sanctions and NATO is planned but restrictions on energy could prove divisive.
U.S. President Joe Biden has arrived in Brussels for meetings of the alliance, G7 and European Union over a conflict that began on Feb. 24 and has caused more than 3.6 million refugees to flee the country.
Biden's visit could also shine light on a dispute with European allies, some of whom are heavily reliant on Russian oil and gas, over whether to impose further energy sanctions.