معاهدة السلام المصرية الإسرائيلية
After the Yom Kippur War, Arens entered politics and was elected to the Knesset as a member of Likud in the 1973 elections. After being re-elected in 1977, he became chairman of the Foreign Affairs and Defense Committee. He voted against the Camp David Accords and the Egypt–Israel Peace Treaty. In 1980, Prime Minister Menachem Begin offered Arens the post of Minister of Defense, but he turned it down due to his disagreement over the terms of the Egypt–Israel Peace Treaty. Arens did not oppose peace with Egypt, but was opposed to certain aspects of the treaty, and thus did not want to have to oversee Israel's evacuation from the Sinai.