NATO is being tested. In the past few days, Russian separatists have gained the upper hand in key parts of Ukraine, raising both regional and international alarm. NATO members in Wales for a two-day summit are firming up an agreement to pre-position military equipment in Baltic states and to put 4,000 troops at the ready. In a speech yesterday, President Barack Obama reiterated the U.S. commitment to NATO and its mission to protect against threats to member states, but many question whether any combination of US-European saber rattling and sanctions can deter Russian President Vladimir Putin. Please join us to discuss the crisis in Ukraine.