good day. this is "andrea mitchell reports." i'm garrett haake in washington where president biden is feeling intense political pressure two critical fronts. first, on afghanistan the president getting a briefing from defense secretary lloyd austin and joint chiefs chairman mark milley this morning as the mass exodus of americans, foreign nationals and afghan citizens with visas continues. with some people arriving at dulles airport in northern virginia. and new from the u.s. embassy in afghanistan, a message from kabul that they cannot ensure safe passage to karzai international airport for flights departing the country. there are serious concerns over whether taliban forces will allow thousands of u.s. citizens and afghans outside of the country before the august 31st withdrawal deadline. on the coronavirus we will hear from the president this afternoon as the delta variant is fueling the largest seven-day average in cases in six months, spurring the nation's top health