A foreign legion of volunteers has been formed in Ukraine, Oleksiy Arestovych, adviser to the head of the President's Office, has said.

"We are now receiving military assistance from other countries. A foreign legion has been formed from volunteers from other countries, which are a lot. maybe two legions would have to be formed from those who are now enrolled for the defense of Ukraine. Our resistance is becoming full-scale," Arestovych said at a briefing at the President's Office on the situation in the country.