Under the Oslo Accords, signed in 1993 and 1995, Israel committed to the phased withdrawal of its forces from parts of the Gaza Strip and West Bank, and affirmed the Palestinian right to self-government within those areas through the creation of a Palestinian Authority. For their part, the Palestine Liberation Organization formally recognised Israel and committed to adopting responsibility for internal security in population centres in the areas evacuated. Palestinian self-rule was to last for a five-year interim period during which a permanent agreement would be negotiated. However, the realities on the ground left both sides deeply disappointed with the Oslo process. Israelis and Palestinians have blamed each other for the failure of the Oslo peace process. In the five years immediately following the signing of the Oslo accords, 405 Palestinians and 256 Israelis were killed.