The American forces- and British Commonwealth ones- join the South Koreans in crossing the 38th parallel and invading North Korea this wee, though large scale resistance by the North Korean forces has to a large extent dissolved. This means that the planned Allied amphibious operation against the port of Wonsan- already delayed by minefields- is no longer really useful, since the South Koreans take the port already this week. And even as American brass meets on Wake Island and discounts the thought of Communist Chinese troops helping the North Koreans, Mao Zedong is preparing for an invasion of his own.