Resumption of hostilities in Karabakh would be a calamity, said Ann Derse, the U.S. Ambassador to Azerbaijan. "The U.S. calls on the Karabakh conflict sides to make courageous moves and mutual concessions. At the same time, the Nagorno Karabakh conflict should be resolved in the framework of territorial integrity and return of refugees," she said.

As to the recent visit of the Iranian President to Baku, the U.S. sees nothing extraordinary in the event, according to her. That was a visit paid by the leader of a neighbor state. "The problem is that Iran keeps on neglecting the urges to stop enriching uranium and developing nuclear technologies," she said, Turan news agency reports.