President Richard Nixon and South Vietnam’s President Nguyen Van Thieu

President Richard Nixon and South Vietnam's President Nguyen Van Thieu Making a Joint Statement at Midway Island 6 8 1969. (Photo by: HUM Images/Universal Images Group via Getty Images)

President Nguyen Van Thieu, who tried to reduce corruption in the military, meets with President Richard Nixon on Midway Island in 1969. Billions of dollars in U.S. aid were an enticing target for corrupt officials. (HUM Images/Universal Images Group via Getty Images)

HUM Images/Universal Images Group via Getty Images