Sir: Swat is the latest scene for the ghastly crimes of the militants the state is fighting against. Three peace volunteers were gunned down in the serene valley by Taliban militants. It is obvious that with Operation Zarb-e-Azab going on at full throttle in North Waziristan, targeting and bringing down militants, these monsters are becoming desperate and killing whoever they can wherever they can. The army must see that Swat has not been fully cleared of these bloodthirsty villains and that the military operation must extend to this area as well. The terrorists must be wiped out once and for all. ZAID FARAN Rawalpindi