Iranian Foreign Minister Mohammad-Javad Zarif said action of joint environmental plan is a security and political necessity for the region.
The plan is necessary to confront environmental dangers, he said, adding this is not only an environmental necessity, but also a security and political one.
Leaders of neighboring states should make efforts to pass the historic exam successfully, he said in the 16th Iranian International Environment Exhibition.
A number of ministers and ambassadors of foreign countries have also attended the exhibition.
"At the moment, we are in dire need of a mutual perception about global challenges and dangers in future. Environment is playing an important role in this perception.”