Is this, some will be wondering, 2003 all over again?
In 2003 Britain joined the US in a highly controversial military campaign against Iraq in a quest to rid it of its supposed arsenal of "weapons of mass destruction". These turned out to have all been destroyed years previously.
As America's closest but junior ally, Britain is almost certain to be affected in some way by what happens now in the Middle East. If Donald Trump decides to commit US forces to help Israel eliminate Iran's nuclear programme then what role will the UK be asked to play?
First off, Britain is very far from being a central player in this fight between Israel and Iran.
The UK, along with other G7 allies, has called for de-escalation, but Israel is unlikely to be listening.
