Four extra sites opened to search for U.S. troops missing in Vietnam

WASHINGTON (Reuters) - Vietnam advised the United States at the start of high-level talks this week it would open four additional sites to investigators seeking the remains of American military personnel missing since the Vietnam War, a senior U.S. defence official said.

Deputy Assistant Defence Secretary Vikram Singh, who oversees U.S. military ties with South and Southeast Asia, said an eight-member delegation led by Senior Lieutenant General Nguyen Chi Vinh told U.S. defense officials about the decision at the outset of talks at the Pentagon this week.