By strengthening alliances with Benouin tribes.
Christianity if I'm not mistaken?
It sounds like you might have a list to choose from, but there is nothing here. Is there more to the question? :)
Douglas MacArthur decided to land a task force at Incheon, South Korea, to cut off the North Korean supply line and to, not only isolate the North Korean forces in the south, but also to push into North Korea. It was brilliantly successful, and without the intervention of Chinese troops and Soviet military equipment, North Korea would have lost the war.
hope this helps
What speech are you referring to?