tracking them. velshi starts now. good morning. it's saturday, august 21st. ali velshi is taking much deserved time off. we begin with breaking news on the situation unfolding in afghanistan and the fallout here in washington, d.c. just moments ago, the u.s. embassy in kabul issued a warning to american citizens, not to travel to hamid karzai international airport until specifically told to. it comes after a president biden press conference, the first time he spoke to report ners ten days since afghanistan fell to the taliban during the biden administration has said quote they have no indication that americans have not been able to get to the airport due to taliban checkpoints. the president revealed that the united states has 6,000 troops