Solidarity for Ukraine was front and centre during US President Joe Biden's State of the Union address this week. Biden reiterated that American troops will not fight in Ukraine, but warned that NATO territory would be defended. He also announced that US airspace would be closed to Russian planes and warned oligarchs that their assets would be seized. To find out more about the effectiveness of such sanctions, we speak to Daniel Tannebaum, who's Global Head of Sanctions at Oliver Wyman and a former compliance officer with the Office of Foreign Assets Control at the US Treasury Department.
