Reports on Monday suggesting Iran has recently tripled its missile arsenal have exacerbated concerns that the Islamic Republic remains tireless in its efforts to step up defensive capabilities against Israel.

The number of Shihab-3 missiles in Iran's possession has gone from roughly 30 at the start of 2008 to more than 100.

The long-range Shihab-3 missiles are capable of striking any point in Israel. At this point, they are armed with one-ton conventional warheads, but are also capable of carrying nuclear warheads.