Inside Europe: A loophole in EU's sanctions against Russia

Officials in several Central European countries have been left red-faced amid reports that Russia had flown a shipment of 10 armoured vehicles across the EU in defiance of EU sanctions. The shipment from Kaliningrad to Serbia was flown by a civilian air cargo firm, and passed through the airspace of 3 EU member states. Rob Cameron reports on what appears to be a loophole in the sanctions regime.