With the situation on the ground in Ukraine growing increasingly dire, The Circus explores what more the U.S. and its allies can do. As Secretary of State Antony Blinken travels to Estonia, John Heilemann speaks with Prime Minister Kaja Kallas about fears Putin could strike a NATO nation next. Plus, Mark McKinnon explores President Biden's response with Senator Mitt Romney; Alex Wagner interviews Ukrainian parliament member Oleksandra Ustinova; and Jennifer Palmieri speaks with officials about the threat Putin now poses to the world.