Likud has historically espoused opposition to Palestinian statehood and support of Israeli settlements in the West Bank and Gaza Strip. However, it has also been the party that carried out the first peace agreements with Arab states. For instance, in 1979, Likud Prime Minister Menachem Begin signed the Camp David Accords with Egyptian President Anwar al-Sadat, which returned the Sinai Peninsula (occupied by Israel in the Six-Day War of 1967) to Egypt in return for peace between the two countries. Yitzhak Shamir was the first Israeli Prime Minister to meet Palestinian leaders at the Madrid Conference following the Persian Gulf War in 1991. However, Shamir refused to concede the idea of a Palestinian state, and as a result was blamed by some (including United States Secretary of State James Baker) for the failure of the summit. On 14 June 2009, as Prime Minister Netanyahu gave a speech at Bar-Ilan University in which he endorsed a "Demilitarized Palestinian State", though said that Jerusalem must remain the unified capital of Israel.