Pentagon says there is a ‘deepening cooperation and relationship’ between Russia and Iran

This statement indicates a growing collaboration or partnership between Russia and Iran. The Pentagon, the headquarters of the United States Department of Defense, is suggesting that this increased cooperation involves both nations working together more closely. This might be in terms of military activities, political strategies or economic ties. The nature of this relationship could have significant regional and global implications, depending on its extent and purpose. To get the full context and understand the details, you should follow up with the latest news and analysis from reliable sources.