"UK PM Keir Starmer appeared to suggest Donald Trump's Iran attack wasn't legal and had no clear plan, as he spoke at a briefing on the conflict from London on Monday. "Whether to commit British troops to military action is the most serious responsibility for any Prime Minister. I have been attacked by some for my decision not to join the offensive against Iran," he said. "If we are to send our servicemen and women into harm's way, the very least they deserve is to know that they do so on a legal basis and with a proper thought-through plan," he added. Earlier Trump said he was assembling a coalition of 'about seven' allies help keep the Strait of Hormuz open - although these were not confirmed. He added that it would be a 'very bad future' for NATO if help was not forthcoming. Iranian FM Abbas Araghchi has said the Strait - which handles around 20 per cent of global oil traffic - "is open to friends and non-hostile countries, but closed to enemies and those who collaborate with them." The US and Israel launched strikes on Iran on February 28. Tehran responded with strikes on Israel and US assets in the region. The conflict soon widened to Israel and Hezbollah trading strikes across the border with Lebanon too. "