UN warning: Iran, US must reach deal to reopen Strait of Hormuz Parts of Asia and Africa could face a food security crisis if the US and Iran do not reach an agreement in the coming weeks on a UN-backed plan to transport chemical fertilizers through the Strait of Hormuz, a UN official warned on Wednesday. In March of this year, the UN established a special task force to facilitate the passage of chemical fertilizer shipments through the Strait of Hormuz. The mechanism designed by this working group has not yet been implemented; But Jorge Moreira de Silva, the UN deputy secretary-general overseeing that program, said that if Washington and Tehran agreed, that mechanism could be activated in 7 to 10 days. "It is absolutely critical to reach an agreement in the coming weeks," he said in an interview in Bangkok, on the sidelines of the annual meetings of the International Monetary Fund and the World Bank. Otherwise we will lose the planting season."