 Complete the following phrase:  On 12October 1999 Prime Minister Sharifs attempt to dismiss General Pervez Musharraf from the posts of Chairman of the Joint Chiefs and Chief of Army Staff failed after the military leadership refused to accept the appointment of ISI Director Lieutet-General Ziauddin Butt his replacement. Sharif ordered Jinnah International Airport to be sealed to prevent the landing of a PIA flight carrying General Musharraf, which then circled the skies over Karachi for several hours. A 