UK PM Starmer warned his cabinet about a possible US strike on Iran.  
Just a day earlier, he claimed Trump hadn’t signaled involvement.  
Officials called the situation “serious and volatile,” debating if Trump might target Iran’s nuclear sites from a UK-US base.  
Britain has stayed out of the Israel-Iran conflict, avoiding actions that could shut its Tehran embassy—a key Western outpost.  
Starmer discussed the threat at an emergency meeting with top ministers, military chiefs, spies, and the