US cannot be a friend of Pakistan. A friend would not threaten a friend the way America did with us after September 11 2001 when it said that if we did not cooperate in the war on terror, it would bomb us back to the Stone Age. Even today, US is not showing respect for Pakistan's sovereignty and attacking inside Pakistan's territory without permission killing many of our innocent civilians. America is a friend of itself and none else. -MARYAM ASAD, Karachi, via e-mail, September 19.