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

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.

The list was compiled using open sources, though it is noted that not all deaths are publicly reported. In the early stages of the war, regular army units, particularly airborne and motorized rifle troops,