PESHAWAR: After passing multiple checkpoints under the watchful eyes of snipers stationed overhead, hundreds of Christians gathered for a Christmas mass in northwest Pakistan 12 years after suicide bombers killed dozens of worshippers. The impact of metal shards remain etched on a wall next to a memorial bearing the names of those killed at All Saints Church in Peshawar, in the violence-wracked province of Khyber Pakhtunkhwa.