Islamabad, March 4 (Reporter) At least 21 people - 15 civilians and six terrorists - were killed in twin blasts triggered in a military base by suicide bombers belonging to the militant group TTP and retaliatory firing by security forces in Pakistan's Khyber Pakhtunkhwa province on Tuesday, media reports said. A hospital official in Bannu said at least 15 civilians, including four children and two women, were killed in the blasts, while 25 others sustained injuries. Security forces said the major terrorist attack on Bannu Cantonment was foiled and they killed at least six attackers belonging to the Tehreek-e-Taliban Pakistan. The sources said the suicide bombers drove two explosive-laden cars into the compound's perimeter, triggering massive explosions, GeoTV reported. Facing stiff resistance from security forces, the explosive-laden vehicles were rammed into the cantonment's perimeter wall in an attempt to gain entry, added security sources. Meanwhile, security personnel at various entry points killed six terrorists and apprehended others. Sources reported that the explosion caused damage to a nearby mosque and led to the collapse of a house's roof. The attack comes days after a suicide bomber killed six people at a religious school in Pakistan, attended by key Taliban leaders in the same province. Similar attacks have increased in Pakistan since the Taliban authorities returned to power in Afghanistan in August 2021. Last year was the deadliest in a decade for Pakistan, with a surge in attacks that killed more than 1,600 people, according to Islamabad-based analysis group the Center for Research and Security Studies. Islamabad accuses Kabul's rulers of failing to root out militants sheltering on Afghan soil as they prepare to stage assaults on Pakistan, a charge the Taliban government denies...////...