Ukraine’s President Zelensky has a message for Putin: not only will you not take any new Ukrainian land, we will claw back what you stole nearly a decade ago. He’s talking about Crimea, the Black Sea peninsula that Russia annexed in 2014. Zelensky made the comments after the Russian air base in Crimea was hit by several explosions, though Ukraine has not said whether its forces were behind it. Correspondent David McKenzie brings us the latest. 

Also in today's show: journalist and author Dana Milbank, Israeli journalist Noa Landau, author Mohsin Hamid, economist Raj Chetty.