Russian President Vladimir Putin responded with defiance after President Biden carried out surprise visit to Ukraine's embattled capital — Biden's unwavering approach now met with the breaking down of a nuclear arms control agreement between the two nations. Dan Balz, chief correspondent for the Washington Post, and Eliot Cohen, the Arleigh Burke Chair in Strategy at the Center for Strategic and International Studies, join Chuck to plot Biden's road ahead in dealing with Russia's invasion of Ukraine.