U.S. 'in constant contact' with Americans still in Afghanistan -Blinken

He said most of those remaining are dual nationals whose homes are in Afghanistan and whose extended families live there.

He also described the department's efforts since President Joe Biden took office in January to speed the processing of special visas for Afghans who worked with U.S. forces during the 20-year war, thousands of whom are still in the country.

Blinken also said he would travel to Qatar on Sunday to meet with the country's leaders and thank them for their help during the evacuation from Afghanistan, and later proceed to Germany where he will hold a ministerial meeting.

"We continue to maintain channels of communication with the Taliban, on issues that are important," Blinken said.