Washington, April 15 -- The United States sought a 20-year suspension of Iran's uranium enrichment programme as part of a deal to end the war, according to media reports on Monday, after Washington and Tehran failed to come to an agreement. US President Donald Trump launched the war on February 28 under the pretext that Iran was developing an atomic bomb - which it denies - and vowed to never let the Islamic republic get its hands on a nuclear weapon. Vice President JD Vance left negotiations with Iran over the weekend empty-handed, with sticking points including freeing up the Strait of Hormuz and Iran's nuclear program. Media outlets reported that Washington asked Tehran to agree not to enrich uranium for 20 years, citing officials close ...