The International Security Assistance Force (ISAF) is a NATO-led security mission in Afghanistan established by the United Nations Security Council. It's members include United States, United Kingdom, Canada, Australia, New Zealand, Germany, France, Italy, Spain, Turkey, Poland, Portugal, Romania, Denmark, Belgium, Czech Republic, Norway, Bulgaria, South Korea, Azerbaijan, and Singapore. All these countries are responsible for the killing of 24 innocent Pakistani Soldiers in a Nato air strike. In all fairness, it's about time our Government should approach the United Nations Security Council for taking to task the Nato member states for killing innocent people. DR. IRFAN ZAFAR, Islamabad, December 7.