Thereupon Hanoi decided that the time was nearing for a coup de grace. It sent North Vietnamese troops to hasten the expected collapse. They began arriving in 1964, along with Nguyen Chi Thanh, a Politburo member who joined Muoi Cue at COSVN. Although technically Thanh became Cue's superior, they shared the COSVN command. Cue continued to be COSVN's Number One man on Cambodia, and the person to whom the Phnom Penh "Cadres Affairs Committee" chief gave his regular briefings.