British sailors would be chomping at the bit to back us up, their government, sans Maggy, would go wobbly.
I don't know if that's true about Blair. He ran toward trouble on 9/12 and was sitting there in the gallery of the Congress when Pres. Bush addressed them. Pres. Bush pointed him out, and he waved, his pockets bulging and clanking with all the old Royal Navy brass knuckles he'd brought with him. He caught our back when we were jammed up, and now the shoe's on the other foot. AFAIK, screw the politics of it, the Persians are toast if Tony says so.
The Brits should just have told the Iranians "Molon labe"..... they remember that bit of Greek from the last time someone said it to them.