Foreign Policy

Pat Buchanan doesn't like the US being obligated to go to war with China over a couple uninhabited islands claimed by Japan.

"South Korea is also in a quarrel with China over a submerged reef in the Yellow Sea known as Ieodo, but to China, Suyan. Seoul has built a maritime research station on the reef, the value of which is enhanced by the oil and gas deposits in the surrounding seabed."

Oil and gas, just like with the Japanese islands. North Korea is also threatening South Korea, and the US is on the hook to defend it from them too.