Litman’s star property is Col. Oleg Nechiporenko, who met with Lee Harvey Oswald in Mexico City two months before JFK’s death. He says he can explain “why Oswald could not have been a KGB agent”-but you’ll have to wait for the book. Another retired colonel, Anatoly Yatskov, set up the heist of U.S. atom-bomb secrets in the'40s. The group’s vice president Anatoly Privalov says its 500 members can barely subsist on pensions averaging $7 a month: “We need the money.”