 Nixon decided instead on the evening of 26 April 1970 to "go for broke" with the "entire package" by having U.S. troops invade both the Parrot's Beak and the Fish Hook areas of Cambodia that bordered South Vietnam.On 28 April 1970, South Vietnamese forces entered Cambodia starting the Cambodian Campaign and on the evening of 30 April 1970, Nixon went on national television to announce that the "incursion" into Cambodia had started with 20, 000 American and South Vietnamese troops entering Cambodia.The operation was successful in the sense that the Americans and South Vietnamese occupied the Fish Hook and Parrot's Beak areas, but the majority of the Viet Cong and North Vietnamese forces had withdrawn in the previous weeks, and were to return after the Americans and South Vietnamese withdrew from Cambodia in June 1970.