Intelligence agencies in the United States and Canada are warning of mounting signs that Hezbollah, backed by Iran, is poised to mount a terror attack against "Jewish targets" somewhere outside the Middle East.Intelligence officials tell ABC News the group has activated suspected "sleeper cells" in Canada and key operatives have been tracked moving outside the group's Lebanon base to Canada, Europe and Africa. 
Officials say Hezbollah is seeking revenge for the February assassination of Hezbollah's military commander, Imad Mugniyah, killed by a car bomb in Damascus, Syria.
Mugniyah is believed by Israel to have been involved in planning the 1992 bombing of Israel's embassy in Argentina in which 29 people were killed and the blast at a Buenos Aires Jewish center two years later that killed 95.
The Hizbullah commander was also involved in numerous terror attacks on
Israel's border with Lebanon, including the kidnapping of Israeli soldiers Benny Avraham, Adi Avitan and Omar Souad, and apparently also the abduction of Eldad Regev and Ehud Goldwasser. (YNet News)
