The prime ministers of Poland, Slovenia and the Czech Republic met Ukraine's President Volodymyr Zelensky on Tuesday evening as a curfew began in Kyiv.
Afterwards, the Czech leader told Ukrainians that they are "not alone".
The group are the first Western leaders to visit Ukraine since Russia invaded.
"We admire your brave fight," Petr Fiala wrote in a tweet. "We know that you're also fighting for our lives. You're not alone, our countries stand by your side."
