Obama and Rouhani in historic telephone talk

The United States and Iran took a historic step towards ending more than three decades of estrangement when President Barack Obama and Iranian counterpart Hassan Rouhani spoke by phone and agreed to work on resolving global suspicions that Tehran is trying to build a nuclear weapon.

The 15-minute call capped a week of seismic shifts in the relationship that revolved around Mr Rouhani’s participation in the annual United Nations meeting of world leaders.