Former President Ghulam Ishaq Khan, a powerful bureaucrat who
led Pakistan from 1988 to 1993 and dismissed two governments on
charges of corruption, died Friday in the northwestern city of
Peshawar. He was 91.  The cause was pneumonia after a long
illness, said his son-in-law, Irfan Ullah Marwat.  Mr. Khan
became the president of Pakistan after the country's last
military dictator, Gen. Mohammad Zia ul-Haq, died along with the
United States ambassador, Arnold L. Raphael, in a mysterious
plane crash in 1988.  A seasoned bureaucrat, Mr. Khan rose
through the ranks, held important official positions and was
always at the center stage of power politics during his career.
He was known as a strict and honest financial manager, a
nationalist and a vehement supporter of the country's nuclear
program. However, his twilight days as the president were marred
by controversy and political turmoil.  Born in 1915 in the Bannu
district of North-West Frontier Province, Mr. Khan joined the
Indian civil service before Pakistan