The U.S. and other major powers have been holding historic negotiations with Iran to try to curb that country's nuclear program. But Washington still has many other concerns about Iranian behavior. And while some diplomats may hope to build on the nuclear talks to push Iran to play a more constructive role in the region, experts remain skeptical.
Karim Sadjadpour of the Carnegie Endowment for International Peace says there are a couple of ways to look at the negotiations with Iran.
"Greater nuclear cooperation with Tehran could bring about greater regional cooperation with Iran," he says.