Some columnists are criticizing the leadership of Pakistan People's Party and Awami National Party. I think this criticism is unfair because the leadership of PPP has shown a great deal of wisdom and political vision at a time when the country is facing an unprecedented crisis. PPP is leading the country in the midst of an internal turmoil and external threats in a flexible and diplomatic manner. Anybody who pushes our leadership towards unwarranted obstinacy is not rendering any service to the country. -JIBRAN NIAZ, Lahore, April 20.