Iran being the only nation with no chem-trailing spraying may not be for long??

Well Iranian government does not do any chem-trailing in Iranian sky but chem-trailing from its neighboring countries spread over Iran through wind, etc.

Anyway the Iranian tv showed something last night that reminded me of the chem-trailing and weather modification. It showed in news a video of Iranian chem-trailing aircraft (inside video and outside) flying and spraying over Lake Uromiah region in North-west of Iran and the reporter said its for cloud seeding and modifying the weather over the lake to create artificial rain cloud since the region is drying up.

I am wondering is it really for rain making or maybe some other hidden agenda they have just like the TPTB. They bare also chem-trailing other parts (weather modification they call it) of Iran. It may look like that last place that was free of chemical spraying may no longer be free of them.