Terrorists are gaining a deeper grip in Pakistan, and are receiving institutional nurturing, Afghanistan’s President Hamid Karzai said on Saturday, calling on South Asian countries to stop playing geo-political games. “In Pakistan, terrorism and its sanctuaries are gaining a deeper grip as demonstrated by the tragic assassination of shaheed (martyr) Benazir Bhutto,” Karzai said at the SAARC summit.“While existing on the absolute fringes of our tolerant and peace loving societies, terrorists in our region receive, institutional nurturing and support. “It is this imbedded nature of terrorists that make it a much more sinister threat.”Relations between Afghanistan and Pakistan have sharply deteriorated in recent months with Afghan officials repeatedly accusing Pakistani agents of secretly backing Taliban insurgents fighting Afghan and foreign troops on Afghan soil.