Seymour Hersh has a long piece in the current New Yorker on various scenarios involving the Pakistani nuclear arsenal, including the strike-counterstrike that would ensue if a group of extremists gained control of part of the arsenal and a jet plane to dispatch it over India. Here the Telegraph UK describes one aspect of Hersh’s report — that a secret US unit trained by Israeli counter-terrorism experts is ready to infiltrate into Pakistan and take charge of, or defuse, Pakistan’s nuclear arsenal in the event that General Musharraf’s control is compromised.