By TOM NEWTON DUNN
Defence Editor
Military experts claim this worrying move means we are at WAR with Iran in all but name.
Last night an intelligence source told The Sun: It is an extremely alarming development and raises the stakes considerably. In effect, it means we are in a full on war with Iran but nobody has officially declared it.
We have hard proof that the Iranian Revolutionary Guard Corps have crossed the border to attack us.
It is very hard for us to strike back. All we can do is try to defend ourselves. We are badly on the back foot.
Our Boys picked up the Iranian helicopters on radar crossing into empty desert.
The sightings have been confirmed to The Sun by very senior military sources.
At least two Brit squaddies are thought to have been killed by bombs planted during these incursions into Maysan province Corporal Ben Leaning, 24, and Trooper Kristen Turton, 27.
A further 44 British deaths have also been linked to the highly advanced bombs, rockets and mortars which originated in Iran.
Coming so swiftly after the kidnap of 15 Royal Navy sailors in the Gulf, our revelation will send strained relations between London and Tehran plummeting further.
Until now, secret units from Irans fanatical RGC have restricted themselves to just training and arming Shia rebels in Iraq.
They include the al Quds Brigade a secretive force tasked to spread Islamic revolution abroad who are the main backers for Hezbollah terrorists in Lebanon and are also active in Palestine and northern Iraq.
An MoD spokeswoman said: There is evidence that explosive devices used against our troops in southern Iraq originated in Iran.
Any Iranian link to armed militias in Iraq either through weapons supply, training or funding are unacceptable.
