This is just domestic politics, not related to international events as far as I can tell. Even the North Korea sympathizer line from the President seems forced.
> This is just domestic politics, not related to international events as far as I can tell
Korea is the largest shipbuilder in America's system of alliances [1]. Seoul would be critical in a war in the Pacific [2]. Korea flipping from democracy to conservative autocracy has geopolitical implications.
> conservative autocracies have traditionally been America's allies, like, erm, South Korea during the cold war. So same old, same old?
"President Yoon has taken an overwhelmingly pro-US policy compared to previous presidents," and his "PPP is fiercely anti-communist and advocates a hawkish policy against North Korea" [1].
On the other hand, "conservatives in South Korea place more importance on economic pragmatism than liberals, so they try to avoid friction with China on Cross-Strait relations, Korean culture and Korean history" (Id.).
That may be the case, but the reason for the coup seems to be domestically motivated and claims of foreign influence seem to be made up to create an "enemy within" scenario to justify the coup.