GUANTANAMO BAY NAVAL BASE, Cuba (AP) — Confessed Sept. 11 mastermind Khalid Sheikh Mohammed offered Monday to help persuade one of his co-defendants to leave his prison cell for a pretrial hearing at Guantanamo Bay. Mohammed volunteered to reach out to Ramzi Binalshibh after the military judge overseeing the case suggested that he might offer a separate trial for Binalshibh, who has refused to appear with his four co-defendants in America’s most important war-crimes trial since the close of World War II. Judge Ralph Kohlmann, a Marine colonel, permitted Mohammed and the other co-defendants to send notes to Binalshibh.