Not everybody is convinced Iran's deal to shelve its nuclear program for six months is a good one.
U.S. Senator Jerry Moran of Kansas says there aren't enough sanctions involved if Iran breaks its word. He is urging President Barack Obama to authorize more sanctions on top of those included in the international deal.
Moran says Iran's "track record of deception and refusal to abide by past demands" makes him wary of any deal. He says other countries must take all steps possible to make sure Iran does not have the ability to make nuclear weapons.
Several nations, including the United States, Russia, Great Britain, Germany and China, worked for years before announcing an agreement over the weekend. The Obama administration says this makes it harder for Iran to make a nuclear weapon and easier for the rest of the world to know if it's trying.