states is stepped up alongside other nato allies to deter and reassure and reinforce our presence along the eastern flank. >> what about the preinvasion sanctions. you didn't answer that part of my question. is the president looking at sanctions ahead of an invasion any differently than he has up until this point given the escalation we're seeing from russia. >> the president believe that's sanctions are intended to deter and in order for them to work to deter, they have to be set up in a way where if putin moves, then the costs are imposed. we believe that is the right logic, both on its own martds but we believe the most important fundamental that is through diplomacy or result of military action is that the west be strong, be united and determined to operate with common purpose and he believes that the sanctions approach he's taken in lockstep with our european partners, the canadians