He said this during a press conference with Qatari Prime Minister and Foreign Minister Mohammed bin Abdulrahman Al Thani.
"I didn't know about his health problems," TASS quoted Blinken as saying.
On January 6, it became known that on January 1, Lloyd Austin was admitted to the hospital with complications after a recent medical procedure.
According to NBC News, the head of the Pentagon spent four days in intensive care.
Politico's sources noted that the US Department of Defense did not inform the White House about the hospitalization of the head of the department for three days.