Pakistani security personnel stand guard at the 13th century Muslim Sufi shrine of Lal Shahbaz Qalandar a day after a bomb attack in the town of Sehwan in Sindh province, some 200 kilometres northeast of the provincial capital Karachi, on February 17, 2017. At least 70 people were killed and hundreds wounded when a bomb ripped through a revered Sufi shrine in southern Pakistan, officials said, after a series of attacks which have shaken optimism over recent improvements in security. The Islamic State group (IS) claimed the attack, the deadliest to hit Pakistan so far in 2017. RSS / AFP PHOTO / ASIF HASSAN