About 1.2 million Russian troops have been killed, wounded or are missing since its invasion of Ukraine almost four years ago, a rate of casualties for a major military power not seen since World War II, a new report from a prominent international think tank says. And the enormous human toll has secured relatively small territorial gains on the battlefield, with Russia increasing the amount of Ukrainian land under its control by just 12% since 2022, the report from the Center for Strategic and International Studies (CSIS) says. The report calls into question assumptions in many circles, including in the...