After eight days of marathon talks in Switzerland, Iran and six world powers have reached a breakthrough framework agreement on Iran’s nuclear programme.

It has been agreed that more than two thirds of Iran’s enrichment capacity will be decommisioned and monitored for 10 years if the parties can reach a comprehensive agreement by June 30.

If there is a final deal, Tehran would ship abroad most of its enriched uranium stocks.

Different restrictions on Iran’s nuclear programme would continue for a quarter century. In return for compliance, international sanctions will be gradually lifted.

Iran’s president said that drafting the comprehensive agreement would start immediately.

Germany’s foreign minister said a preliminary agreement reached on Thursday to contain Iran’s nuclear programme represented a “big, decisive step forward” that could lead to an easing of tensions across the Middle East if a final deal was clinched in over the coming months.

“It is too early to celebrat