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In Iranian waters, a strange trade is taking place — Pakistani fishermen exchange subsidised Iranian fuel for high-value tuna, a barter system now under threat from escalating US-Iran tensions.

Shah Zamin Khan is among thousands of Pakistani tuna traders whose lucrative business has been at a near standstill since February, when the US-Israeli war on Iran began.

The recent targeting of Iranian seaports by Washington has made matters worse.

Iran’s southern ports of Konarak, Pasabandar and Beris, which border Pakistan’s southwestern Balochistan province and serve as key fish trade hubs, are among the sites targeted by US airstrikes in recent weeks.