Pakistani railway chiefs banned all trains from running at night in an insurgency-hit southwestern province after a blast tore apart a mainline for the second time. Timetables have been changed and trains will only run in daytime to limit the damage from any further attacks by nationalist tribesmen in Baluchistan demanding more political rights, jobs and royalties from the province’s natural resources. Services between Quetta, the provincial capital, and southern Karachi city resumed Tuesday after engineers repaired tracks damaged by a bomb late Monday. The same line was hit by another explosion on Saturday. Full Story