US President Donald Trump's decision to pull out of the Iran nuclear accord and re-impose sanctions on Tehran threatens to derail a project to help build Afghanistan's economy, endangering a key goal of the US strategy to end America's longest war.
The Indian-backed Chabahar port complex in Iran is being developed as part of a new transportation corridor for land-locked Afghanistan that could potentially open the way for millions of dollars in trade and cut its dependence on Pakistan, its sometimes-hostile neighbour.
Building Afghanistan's economy would also slash Kabul's dependence on foreign aid and put a major dent in the illicit opium