Obama: Iran nuclear deal limits ability to create nuclear weapons

A historic deal was struck early Sunday between Iran and six world powers over Tehran's nuclear program that freezes the country's nuclear development program in exchange for lifting some sanction while a more formal agreement is worked out.
The agreement -- described as an "initial, six-month" deal -- includes "substantial limitations that will help prevent Iran from creating a nuclear weapon," U.S. President Barack Obama said in a nationally televised address.