The nuclear arms reduction treaty between the U.S. and Russia was signed in 2010 in Prague.
The treaty limits the size and composition of the U.S. and Russian nuclear arsenals.
It is the only remaining arms control agreement between both countries.
He also said that Russia is prepared to test nuclear weapons if the U.S. does so first.
The statement is a recent in a series of nuclear threats that Russia has made since the beginning of its full-scale invasion of Ukraine in February 2022.
The West has so far been reluctant about supplying such weapons, fearing that Ukraine would attack Russian territory.
The OHCHR reported that the majority of civilian casualties caused by Russian attacks were in Donetsk and Luhansk oblasts. »