With tensions between Israel and Iran running sky high over the latter's nuclear program, U.S. officials and military analysts are growing increasingly concerned that Israel will launch a multi-phase air and missile attack that could trigger waves of retaliatory missile strikes from Tehran.
Such a shootout could quickly spiral into a regional conflict that would potentially force the U.S. to intervene to protect its interests.
The emerging consensus among current and former U.S. officials and other experts interviewed by NBC News is that that an Israeli attack would be a multi-faceted assault on key Iranian nuclear installations, involving strikes by both warplanes and missiles. It could also include targeted attacks by Israeli special operations forces and possibly even the use of massive explosives-laden drones, they say.
The Iranian response to such an attack is uncertain, but many experts and officials believe it is likely to include retaliatory missile strikes. Iran has more missiles in its arsenal than Israel, according to some estimates, and has the capability of striking targets in most Israeli population centers.
"I think that it would strike Iran as a reasonable response, an eye for an eye," said Christopher J Ferrero, a professor of diplomacy at Seton Hall University in New Jersey and an expert on Middle East missile forces.
He also said Iran would likely attack major cities with its Shahab 3 missiles, which he said are not as accurate as the Israeli missiles, but would be an effective "instrument of terror … that could certainly cause significant damage to heavily populated suburban and urban areas."
Israel possesses advanced anti-missile defenses, but those systems could be overwhelmed if Tehran launched large numbers of missiles, as Ferrero expects.
Given the immense difficulties in carrying out successful air strikes on the four key Iranian installations using its warplanes alone -- as laid out last week by the New York Times, U.S. officials say Israel would be likely to coordinate such airstrikes with waves of missiles. This would greatly increase the chances of penetrating fortifications that Iran has built to protect some of its key installations and overwhelm Iran's air defenses, said the former and current U.S. officials, who spoke on condition of anonymity.
"Two words: Jericho missiles," said one former White House and Pentagon official, speaking on condition of anonymity, when asked how Israel would attack Iranian targets at great distances. "They are conventionally armed, have a very small CEP (circular error of probability, meaning they are highly accurate) and can be used in conjunction with a strike fighter operation."
Israel has as many as 100 Jericho ballistic missiles – both short- and medium-range – as well as submarine-launched cruise missiles, though the officials say they believe the latter are unlikely to be used. The short-range Jericho I missiles would be of no use in an attack on Iran, because the targets are far beyond its 300-mile range. However, the medium-range Jericho II's are capable of hitting targets as far as 900 miles away – or as far east as Tehran. Israel also tested a Jericho III intercontinental ballistic missile in 2008 and Israeli media have reported that it may have deployed one or more of the weapons, which would put all of Iran within reach.
The missiles would most likely be launched from the Hirbat Zekharyah missile range, midway between Israel and the Mediterranean Coast, according to "Critical Mass: the Dangerous Race for Superweapons in a Fragmenting World," by William E. Burrows and Robert Windrem, and various Israeli press reports.
Although designed to be part of Israel's nuclear deterrent force, the Jerichos can be equipped with high explosives as well as nuclear warheads. U.S. officials have said that an Israeli attack, if it happens, would be intended to surgically take out the nuclear facilities, not inflict the mass casualties that would result from a nuclear attack.
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Israel Iran Politics and Growing Missile Programs
