the nato founding of the nato treaty which says an attack on one is an attack on all. trace: our understanding, the nato forces are not to be in any kind of force used unless this war spills outside of ukraine into nato countries. nato come in the united states other countries and nato, they have said that they are not getting involved in the fighting in ukraine. that these are simply forces in nato countries that will be staying in nato countries for defensive purposes. trace: rich edson live for us from the pentagon come back to you as the news breaks. president biden brief to both democrats and republican leaders including house speaker and nancy pelosi and mitch mcconnell on the island going situation ukraine. we are joined by tyree skinner, fox national security contributor and as you watch what s happening on the ground and kyiv in ukraine, was the