Israel and the United States are to conduct a crucial joint missile defense exercise to simulate a response in the event of war between Israel, Iran, Syria and Lebanon. According to a news report appeared in the Jerusalem Post on Sunday the Juniper Cobra exercise will include the Arro missile defense system – the THAAD, Aegis and PAC-3 .The biennial exercise, which will begin on Monday and end on Friday, will simulate a response in the event of war between Israel, the Islamic republic, Syria and Hizbullah, More than 1,000 American troops from the European Command in Stuttgart, Germany have been deployed in Israel for the exercise – mostly in the Negev – in addition to some 15 missile ships, some of them carrying the Aegis ballistic missile defense system. The exercise comes amid growing tensions between Israel and Iran over the Islamic nations nuclear ambition. Iranian cleric Mojtaba Zolnour, who is Ayatollah Ali Khamenei's representative in the Revolutionary Guard, warned that Tehran will respond decisively if and Israeli or American missile lands in Iran.