Why the United States is unlikely to abandon the Indo-Pacific

What would the Japanese and South Korean navies do if the United States abandoned the Indo-Pacific?

They would cooperate where necessary, but U.S. withdrawal is unlikely because Pacific trade, supply chains, and security are central American interests.

A hypothetical American withdrawal would give the Japanese and South Korean navies reason to cooperate. The premise is questioned because Pacific trade and global production networks connect the region to American interests. Aircraft-carrier construction depends on components from several countries, as do comparable British weapons systems. Those material connections underpin the doubt that withdrawal would follow.