Police have blocked a demonstration by Jewish nationalists who tried to march on the Temple Mount. Some 3,000 police and soldiers deployed in and around Jerusalem's Old City, to prevent an outbreak of violence at the hotly disputed compound that marks the site of the Biblical Temples and the holiest place for the Jewish people. But it is also home to the Mosque of Al Aksa, the third holiest place in Islam, and Palestinians warned of an explosion of violence if any Jews entered the site. In the end, only several dozen religious Israelis made it through the police dragnet, and Moslem prayers at the mosque passed quietly.