Abbas pledges to hunt down bombers

Palestinian leader Mahmoud Abbas today pledged to track down and punish militants responsible for a suicide bombing that killed four Israelis at a Tel Aviv nightclub, and Palestinian security officials pointed to the Lebanese guerrilla group Hezbollah as the apparent mastermind.

Israel and the United States said Abbas has to act quickly and forcefully - despite his long-standing reluctance to confront militants – if he wants to rescue a fragile Mideast truce.