"My family and I are horrified seeing pictures from Ukraine and heartbroken for the innocent people who have been so terribly affected. We stand for peace," Federer said on Twitter.
More than 3.3 million refugees have already fled Ukraine through its western border, with around 2 more million displaced inside the country.
A generation of Ukrainians who knew of war only from history books and the stories of their grandparents has been forced to prepare to fight, and some are choosing to do it with the partners they were building their lives with only weeks ago.
Six trains and a bus carried her on a four-day journey from being a web and app designer from Dnipro in eastern Ukraine to living as a refugee in Aachen on the westernmost edge of Germany.
Russian news agencies have said buses have carried several hundred people Moscow calls refugees from Mariupol to Russia in recent days.
Ukraine's defence ministry said in a statement an armed drone had destroyed a Serna-class landing craft and an missile defence system at the small island under Russian control.
Jill Biden called the show of solidarity "amazing" but also "just the beginning.” She said it was inspiring for Romanians "to welcome all these refugees into their homes and offer them food and clothing and shelter and give them their hearts.
"It is clear that Vladimir Putin is responsible for heinous war crimes," Canadian PM said at a news conference with the Ukrainian leader, adding that "there must be accountability" and that he had "witnessed firsthand the brutality of Russia's illegal war."
In a peaceful corner of northern France, Ukrainian Olympic athlete Tatyana Kolesnikova tends to a freshly planted vegetable field beside a medieval castle — the sounds of the war she fled replaced by a chorus of birdsong. The former world rowing