I've been reading and posting from that paper. No, it's not reliable. The paper is interesting for precisely the reason that it prints these scare stories like US tabloids print stories about UFOs. Not to mention the Frontier Post is based in Peshawar, a border town that has been sympathetic to the Taliban.
Paper Says Bin Laden Claims He Has Nuclear Weapons
Source: Reuters via The New York Times
Published: November 9, 2001
ISLAMABAD (Reuters) - Pakistan's respected Dawn newspaper said on Saturday Osama bin Laden, in an interview inside Afghanistan, said he had nuclear and chemical weapons and might use them to respond to U.S. attacks.
``I wish to declare that if America used chemical or nuclear weapons against us, then we may retort with chemical and nuclear weapons. We have the weapons as deterrent,'' the newspaper quoted bin Laden as telling a well-known Pakistani journalist in Afghanistan on Wednesday night.