Starlight

In November 1958, the Australian air force recovers a crashed alien vessel near Brisbane. The humanoid aliens express their fears. The Cold War could easily escalate into a nuclear war. The radiation would not only contaminate other planets within the solar system, it would destroy the human race. Millions of years of work by the aliens in carefully developing their stock intellectually and spiritually would be destroyed in just a few days. An offer is made. If Earth eliminates nuclear weapons and most of its military, the aliens will gradually release their technology. No more war, pollution, cancer or starvation. The only problem is nobody trusts the aliens.