He made the proposal in a meeting with Mashad Mayor Mohammad Reza Kalaei on Wednesday where he hoped that they will be able to do the significant thing despite US' sanctions.
Mashad is a cultural, religious and economic hub, he said, stressing the need for promoting collaboration between the two countries.
Kalaei, for his part, slammed the US sanctions, saying that municipalities as non-governmental institute can play major role in diplomacy.
Mashhad is a suitable venue for investment, he said.
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