Iran's new centrist leader Hassan Rowhani on Friday urged Moscow to help solve Tehran's nuclear crisis as he met President Vladimir Putin for a key meeting at a security summit in Kyrgzystan.

"As far as the Iranian nuclear problem is concerned, we would like this problem to be solved as soon as possible within the framework of international norms," Rowhani told Putin in televised remarks translated into Russian in Bishkek.

"In the past Russia undertook important steps in this sphere, and right now is the best opportunity for new steps on your part," he said.

The two leaders were meeting for the first time on the sidelines of a summit of the Shanghai Cooperation Organisation held in Kyrgyzstan