Trump warns 'clock is ticking' for Iran as peace progress stalls

According to Iran's semi-official Tasnim News Agency, they included an immediate end to the war on all fronts - a reference to the continued Israeli attacks against Iran-supported Hezbollah in Lebanon - a halt to the US naval blockade of Iranian ports, and guarantees of no further attacks on Iran.They also reportedly included a demand for compensation for war damage and an emphasis on Iranian sovereignty over the Strait of Hormuz.Iran's semi-official Fars News Agency said on Sunday that Washington had set five conditions in response to Tehran's proposal.They reportedly included a demand that Iran keep only one nuclear site in operation and transfer its stockpile of highly enriched uranium to the US.Trump suggested on Friday that he would accept a 20-year suspension by Iran of its nuclear programme - a major sticking point between the two countries - in what appeared to be confirmation of a shift in position away from a demand for a total end to it.Israeli and US forces began massive air strikes on Iran on 28 February. The ceasefire meant to facilitate talks has largely been observed despite occasional exchanges of fire.Iran has also continued to control the Strait of Hormuz, effectively closing the vital waterway through which around 20% of the world's oil and liquefied natural gas travels.The move, which Iran has said is in retaliation for US and Israeli attacks, has sent oil prices soaring globally.