I’m talking about a deal with TSMC to safeguard their production.

Although, between the EU, Japan and Korea there might be enough of an incentive for China to think twice even without the US involved.

There are two countries in the EU that operate nuclear submarines and aircraft carriers. More with conventional subs. Shutting down the sea lanes in that area would be relatively easy for any number of European countries.

One thing that Ukraine (if Iraq and Afghanistan didn’t already) has proven is that it is much harder to win a war for a major power than the posturing would have you believe.