Dhaka, June 24 -- The UN Security Council met on Sunday to discuss US strikes on Iran's nuclear sites as Russia, China and Pakistan proposed the 15-member body adopt a resolution calling for an immediate and unconditional ceasefire in the Middle East."The bombing of Iranian nuclear facilities by the United States marks a perilous turn," UN Secretary-General Antonio Guterres told the Security Council on Sunday. "We must act - immediately and decisively - to halt the fighting and return to serious, sustained negotiations on the Iran nuclear programme."The world awaited Iran's response on Sunday after President Donald Trump said the US had "obliterated" Tehran's key nuclear sites, joining Israel in the biggest Western military action against t...