I think you should double check it and see if you can find the answer if not come back and ask again
President Jimmy Carter (1976-1980) was elected in the aftermath of the Watergate scandal. Carter's sought to restore credibility to the presidency. Carter worked to ensure the importance of human rights in foreign policy and promoted a fair approach. He successfully reached a settlement between the Egyptians (Anwar Sadat) and Israel (Menachem Begin) in 1978. Carter also set a high moral standard in his negotiations with foreign leaders.
They countered it because they ruined the land in every way possible which made it hard even for their allies from South Vietnam to support them. Napalm just burnt down forests and habituated areas and harmed a lot of civilians directly, while things such as agent orange destroyed the environment and poisoned the ground, the waters, the food, and basically anything else. It caused much more harm to the people than it did to help them.