UN Ambassador Samantha Power: Iran talks need more time

WASHINGTON - The U.S. ambassador to the United Nations says the Obama administration needs more time, without new sanctions, to pursue a deal with Iran on nuclear weapons.

Samantha Power says, "We have to test this regime." She tells "CBS This Morning" Friday that one key obstacle is the "generations of suspicion" between the two countries.

Pressure has been building within both parties in Congress to toughen economic sanctions already in place. Iran repeatedly has denied it is trying to build nuclear weapons.

Asked about Israeli Prime Minister Benjamin Netanyahu's assertion that Iran is taking advantage of U.S. and international patience, Power says she doesn't believe that's so. She says, in her words, "The sign that this is not a good deal" for Iran is that Tehran hasn't yet accepted it.