French President Emmanuel Macron, German Chancellor Olaf Scholz and Italian Prime Minister Mario Draghi arrived in Kyiv on Thursday on a joint trip.
The three travelled together overnight in a train used to transport high-profile visitors to Ukraine.
"It's an important moment. It's a message of unity we're sending to the Ukrainians, of support, to talk both about the present and the future, since the coming weeks, as we know, will be very difficult," Macron said as they arrived.
