Vietnam is among four European and Asian countries that U.S. Secretary of State Antony Blinken will visit from April 11 to 18, the U.S. Department of State announced in a press release on Monday. This will be his first official visit to Vietnam as U.S. Secretary of State. The U.S. Department of State did not reveal the date Blinken would visit Vietnam. Vietnam is among four European and Asian countries that U.S. Secretary of State Antony Blinken will visit from April 11 to 18, the U.S. Department of State announced in a press release on Monday. The U.S. Department of State did not reveal the date Blinken would visit Vietnam.