Pakistani fighter jets targeted alleged hideouts of nationalist separatists in neighbouring Iran, a day after Iranian drones hit Islamist fighters in cross-border drone strikes. The tit-for-tat strikes by Sunni-majority Pakistan and Shiite-dominated Iran have escalated tensions with regional powers China and Russian calling on both sides to show restraint and not to let the conflict escalate further. Pakistan’s foreign ministry in Islamabad said on Thursday that the air force targeted the hideouts of separatists inside Iran’s Sistan province in an operation codenamed Marg Barg Saramchar. Marg …