Guys,
I think you're missing the obvious here.
I am Israeli and as such am very into the news and being updated with them on a daily basis.
Before those bomb shipments commenced, the UK government told the US one that it better not be using it's airspace for carrying bombs without telling them, and that even by telling them it won't make it okay.
So the Americans just as they always do (I am an American as well), did what they wanted but played it clever. They used UK airspace, but specifically made everybody involved what the flights are carrying so later on when they get to apologize to the UK government it won't have to be about things that were done without thier knowledge and so a diplomatic crisis would occur. They will say, 'we're sorry' but we didn't hide anything from you..... we published it in bold letters.
That's my 5 cents....
-downwindabeam