Biden's latest speech on Afghanistan is delayed by over 4 hours

President Biden's remarks on Afghanistan were pushed back a second time Tuesday afternoon until 4:30 p.m. ET, more than a four-hour delay from the original 12 p.m. ET start time.

Biden will discuss the US' "ongoing efforts in Afghanistan to evacuate American citizens, SIV [Special Immigrants Visa] applicants and their families, and other vulnerable Afghans, and his meeting with fellow G7 leaders on how our nations can come together in support of the Afghan people," the White House said.

White House on Tuesday announced in a statement that the US intended to keep the August 31 deadline for completing evacuations from Kabul's airport.

Biden's remarks Tuesday afternoon come as the Taliban earlier said they would not allow Afghans to reach the Kabul airport.