Summary: Biden administration and military officials were at the U.S. Capitol Thursday briefing senators on the growing tensions over Russia and Ukraine. This comes after President Biden sent 3,000 troops to Eastern Europe to bolster NATO allies. Senators face tough questions about when to come down on the Russian government and how best to do it. NewsHour's Lisa Desjardins joins Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
