U.N. , part of Swat Valley , is where Pakistan army are fighting U.N. militants . Taliban says Hundreds Pakistanis have been displaced by fighting . As a result , Pakistani authorities have increased security in Islamabad , Pakistan 's capital city . Backlash follows suspected Taliban suicide attack June 8 at a mosque . Official : Both sides using heavy weapons , including anti-aircraft weapons .
U.N. , part of Swat Valley , is where Pakistan army are fighting U.N. militants . Taliban says Hundreds Pakistanis have been displaced by fighting . Backlash follows suspected Taliban suicide attack June 8 at a mosque . Official : Both sides using heavy weapons , including anti-aircraft weapons .