On the contrary, they'll try to use this as another reason why we should run with our collective tails between our legs.
Well, the British liberal democrats are saying this:
In a statement, leader of the Liberal Democrats, Sir Menzies Campbell, also called for their immediate release.
"Whatever the rights and wrongs of military action, British forces in Iraq are now there with the authority of a UN security council resolution... and the Iranian government should be left in no doubt of the serious implications of their action," he said.
http://news.bbc.co.uk/2/hi/uk_news/6484279.stm