Can punitive measures deter a full-scale Russian invasion?

For more on the impact of the new sanctions on Russia and the wider U.S. and European Union reaction to Russia's invasion of Ukraine we get two views. Stephen Hadley, a former national security adviser during the George W. Bush administration, and Andrew Weiss, who served as director for Russian, Ukrainian, and Eurasian affairs on the National Security Council, join Nick Schifrin to discuss.