Pakistan People’s Party Chairman Bilawal Bhutto Zardari has called for a US apology over cross border attack in Salala last year that killed over two dozen Pakistani soldiers. Speaking at a ceremony on Tuesday, he also raised voice against US drone attacks, saying the strikes were in violation of Pakistan’s sovereignty. He said that questions were being raised on Pak-US friendship following the bilateral operation in Abbottabad. Bhutto said that Pak-US relations had been passing through a critical phase. The PPP chairman maintained that Pakistan was determined to eliminate terrorism. He said that his mother Benazir Bhutto struggled for the uplift of women and strengthened democracy.