Militants launched almost two attacks a day in Pakistan in August, killing 84 people, a report said on Tuesday, highlighting the volatility of the South Asian nuclear power. While most attacks were executed by Islamist militants, nationalist rebels were behind the most deaths in the month, the report by the Islamabad-based Pak Institute for Peace Studies said. The deadliest was a coordinated attack at multiple locations by the rebel group Balochistan Liberation Army (BLA) in the south-west on August 26, killing more than 50 people. The north-western province of Khyber-Pakhtunkhwa bordering Afg…