After years of economic isolation, Iran is now open for business.
The International Atomic Energy Agency announced on Saturday that Iran has held up its end of last year's nuclear deal, prompting the US and European Union to begin lifting sanctions.
For the first time since 2012, Iran will be able to sell its oil on the world market once again.
Sanctions targeting its banking, steel and shipping industries are also lifted.
US Secretary of State John Kerry described it as a "historic day" and said it proves that negotiations - rather than war - can be used to resolve problems.
But can Western countries trust Iran? And what does this mean for the region and the world?
Presenter: Sami Zeidan
Foad Izadi - Professor of World Studies at the University of Tehran specialising in US-Iran relations
Fahad Alsholaimi - President of the Gulf Peace and Security Forum
Hossein Rassam - Former Iranian Adviser to the British Foreign and Commonwealth Office
Source: Al Jazeera