The key problem for his presidency clearly would be the Vietnam War. It had driven his predecessor from office, and if it were not resolved in a way that could be turned to political advantage, it would drive him from office as well. Two months after Nixon assumed the presidency, American combat deaths exceeded thirty-six hundred, and there seemed no end in sight. Nixon was in a dilemma, for during the campaign he had said that he had a "secret plan" to end the war but could not divulge it because it might upset the Paris peace negotiations. If his plan involved escalation, Democrats could charge that he was abandoning attempts to reach a peaceful solution and could point to mounting American casualties and prisoners of war. If he negotiated a solution that led to the fall of the government in Saigon, Democrats could charge he had abandoned an ally. Nixon had to find a way to cut American commitments while preserving the non-Communist government in South Vietnam—at least for a "decent interval" so that the overthrow of the regime could not be blamed on the United States (Morgan 2002). Nixon, his national security adviser Henry Kissinger, and Secretary of Defense Melvin Laird settled on an approach with several elements. First, the Laird policy for "Vietnamization" was adopted. Responsibility for fighting would be turned over to the Vietnamese, in order to reduce American casualties. Gradually American forces would be withdrawn. This would buy time on the home front. Second, a variant of the "madman" approach in international relations would be adopted. The administration would warn the North Vietnamese that unless they settled soon they would be subjected to carpet bombing of cities, mining of harbors, and even the spread of radioactive debris to halt infiltration of the South. Irrigation dikes would be destroyed and forests defoliated. Third, Nixon and Kissinger