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.

Russia will likely surpass 1 million casualties in its war on Ukraine this summer, according to one of the world’s leading think tanks.