It's a major escalation of the THREATS WAR. And it could well mean the Iranians are more worried than ever that the U.S. and Israel are indeed really preparing to attack:
From the article: IRAN has threatened to launch a missile blitz against the Gulf states and plunge the entire Middle East into war if America attacks its nuclear facilities.
Admiral Ali Shamkhani, a senior defence adviser to the supreme leader, Ayatollah Ali Khamenei, warned that Gulf states providing the US with military cooperation would be the key targets of a barrage of ballistic missiles.