U.S. intelligence agencies estimate that between 2,000 and 4,000 Russian soldiers have been killed in the two-week long invasion of Ukraine - possibly more than the number of Americans killed in the 20-year war in Afghanistan, writes NBC NEWS.

Lt. Gen. Scott Berrier, the director of the Defense Intelligence Agency, said during a worldwide threats hearing before the House Intelligence Committee on Tuesday morning that analysts give the estimate low confidence, and that it was based in part on information from “open sources,” which can mean media and social media reports.

The estimate underscores the steep price Russia is already paying for a conflict that Director of National Intelligence Avril Haines, in the same hearing, called “a shock to the geopolitical order with implications for the future that we are only beginning to understand.” An estimated 2,448 American service members were killed during two decades of war in Afghanistan, according to the Associated Press.