Strait of Malacca - Singapore

China is the largest importer of crude and LNG and most of it comes through the Strait of Malacca. 

At 1.7 miles wide at its narrowest point, the strait is the paramount choke point in world trade. 

It leaves China vulnerable to a naval blockade by the US Fifth and Seventh Fleets, operating in concert with Quad navies.

https://englundmacro.blogspot.com/2024/10/clean-technology-will-make-us-richer.html