Nearly 1 million Russian soldiers have been killed or injured in the country’s full-scale invasion of Ukraine, according to a new study, a grisly measure of the human cost of Russian President’s Vladimir Putin’s unprovoked three-year assault on its neighbor.

Moscow said on Wednesday that military options were "on the table" for its response to Ukrainian attacks deep inside Russia and accused the West of being involved in them.

A serviceman from the mobile air defence unit of the 115th Separate Mechanized Brigade of the Ukrainian Armed Forces fires a Browning machine gun towards a Russian drone during an overnight shift, amid Russia's attack on Ukraine,