Tony Blair has reportedly said that Pakistan is paying a heavy price for the mistakes of 1970s when it developed religious schools which became the source of extremism. I don't know which history books Mr. Blair has been reading but the facts on the ground were different. Religious schools mushroomed in 1980s with the active support of both the UK and the US. Pakistan is paying a price because in 1970s it resisted American and British pressure not to proceed with nuclear technology. DR. GHAYUR AYUB, London, October 1.