during the korean war, 75% of north korean's air battles were actually fought by russian pilots. this was kept secret by russia, korea, and the american government to avoid war with russia.

later, the american supported the taliban in its war against russia in afghanistan, eventually driving the russians out and leaving behind a taliban trained and armed by the american government.

an average south korean is 3 inches taller than an average north korean, primarily due to better nutrition.

in south korea, on the day that high school seniors take their final exams, planes are forbidden to fly for fear that they will distract the students. most businesses open 1 hour later to allow the students to get to the testing centers without having to contend with traffic. in fact, police will give students an escort there if they request it.