In an hour-and-a-half long audio-taped message Wednesday night, Al-Qaeda Deputy Commander Ayman al-Zawahri vowed that with Allah's help, they would target Jews worldwide. "We promise our Muslim brothers that we will do the best we can to harm Jews in Israel and the world over, with Allah's help and according to his command," said al-Qaeda's second in command.Last week, he called on Muslims worldwide to strike Israeli and Jewish communities abroad to revenge Israel's counter-terror operation in the Gaza Strip in early March.