https://www.mercurynews.com/2022/03/21/live-updates-russia-warns-of-diplomatic-breakdown-with-us/

NEW YORK — Russia has warned that relations with the U.S. are “on the verge of a breach” and summoned the U.S. ambassador for an official protest against President Joe Biden’s criticism of Russian President Vladimir Putin.

A Russian Foreign Ministry statement Monday referred to “recent unacceptable statements” by Biden about Putin. Biden referred to Putin last week as a “war criminal” in relation to the Russian invasion of Ukraine.