In Pakistan’s southwestern mountains, pickup trucks loaded with plastic cans of fuel smuggled from Iran line dusty roads as youngsters unload the containers, fill smaller cans and strap them onto motorbikes to supply nearby markets. The illicit trade has long thrived in the region but is feeling the knock-on effects of the war which has engulfed the Middle East following US-Israeli strikes on Iran. Supplies coming across the 900km (560-mile) border between Pakistan and Iran have dropped by...