ISAFs violations of Pakistani borders - firstly, with unmanned planes and now, with manned ones - are to be seen as an attack on our sovereignty and must be responded. It is time to understand that the notion of the 'front line state is nothing but a farce. If the front line state is to bear all the losses and face global criticism and humiliation, then it is better to end our alliance with the US. DR. SHAHID MEHMOOD, Faisalabad, October 1.