I would imagine a fitting analogy would be to envision an Oklahoma split into two with one half Communist and the otehr half as it is. Both are fellow Americans, you even have plenty of your cousins, school friends, and even your grandparents in the Communist Oklahoma. It would be natural (though not sensible) to believe that if you prod the Communist Oklahoman regime with material aids and encouragements enough, its leaders would be so moved as to abandon the Communist tyranny, and you would have thought the leaders of Communist Oklahoma would be in good faith to transfer all the aids to the ordinary peasants.
Now imagine Britain has security guarantee with the US at non-Communist Oklahoma to help defend it against Communist Oklahoma. The leaders of Communist Oklahoma incessantly broadcasts views that "We are all Americans! The British are stinkin' foreigners!" and some people would start to believe the British aren't their friends and we-should-unite-all-Americans above everyone else.
This sums up the situation in Korean Peninsula is how they come up with the insane aid-the-North programme.
Yep. Nice analogy. That's what I meant to say but it didn't really come out. Thanks.