Islamabad, Pakistan – Pakistan’s security forces are locked in what they describe as a “complex operation” against a group of separatists who attacked a train earlier on Tuesday. The train was traveling from Quetta, the provincial capital of the southwestern province of Balochistan, to Peshawar, the capital of the northwestern Khyber Pakhtunkhwa province. Fighters belonging to the Baloch Liberation Army (BLA), a separatist group seeking Balochistan’s secession from...