“Putin must pay a price, a high price, for his brutal aggression,” European Commission President Ursula von der Leyen told the European Parliament as she announced a sixth round of sanctions against Russia. The EU is now proposing a ban on Russian oil imports and the removal of Russia's biggest bank from the SWIFT payment network. Meanwhile in Ukraine, heavy battles are being fought at the Mariupol steel plant according to that city's mayor. He says contact has been lost with the last Ukrainian defenders there. First Move's coverage today begins with an in-depth look at the latest EU sanctions proposal with CNN's Clare Sebastian.