"Barack Obama is deploying a missile shield to protect American allies in the Gulf from attack by Tehran."

"The US is dispatching Patriot defensive missiles to four countries – Qatar, United Arab Emirates, Bahrain and Kuwait – and keeping two ships in the Gulf capable of shooting down Iranian missiles. Washington is also helping Saudi Arabia develop a force to protect its oil installations"

www.guardian.co.uk...

Another bit i found interesting:
"Tony Blair, Middle East envoy on behalf of the US, Russia, the UN and the EU, continually referred to what he described as the Iranian threat during his evidence at the Chilcot inquiry last Friday. Textual analysis now shows that he mentioned Iran 58 times."

It really is a time of when, not if

I'd say early-mid summer this year? Autum at very latest if this continues and iran doesnt back down.