William Hague is speaking in the House of Commons on the deal reached by the international community with Iran over its nuclear ambitions.
The Foreign Secretary has listed commitments made by Iran, saying these will prevent Iran from using its program to build nuclear weapons. In return some of the international sanctions will be suspended.
A deal struck after lengthy negotiations in Geneva, Switzerland, commits Iran to curb its nuclear activities for six months in exchange for limited and gradual relief from some sanctions, including access to £2.5 billion ($4.2 billion) from oil sales.
When you consider the diplomatic mountain the US and Iran have already scaled, you get a daunting sense of the challenge ahead.
The deal between Iran and world powers looks like a breakthrough, but with six months of wrangling over details ahead, it could still fail.
The nuclear agreement between Western powers and Iran was broadly welcomed by politicians, former world leaders and Middle East experts.