Prime Minister Fumio Kishida and Swiss President Ignazio Cassis agreed Monday to maintain strong sanctions on Russia over its invasion of Ukraine, Japan's Foreign Ministry said, as the war shows no signs of easing.

Kishida and Cassis, who doubles as foreign minister, also agreed in Tokyo that Russia should be held responsible for its killing of Ukrainian civilians, urging Moscow to heed the voice of the global community and stop the invasion, according to the ministry.

"Russia's aggression shakes the foundation of order not only of Europe but also of the international community including Asia," Kishida said at the outset of the meeting, which was open to the media. "There is no time that the unity of the international community is required as much as it is now."