Well, with tariffs back and forth it's not worth it. Even more, you want isolation, we're happy to isolate you. Most of all, for being an unreliable 'ally' I'd like to cut all ties.
Step 1: announce you will cripple the equipment you sell to allies, explicitly because you might attack them someday
Step 2: execute boneheaded policies to ruin both global trade but especially your own economy’s functioning, demonstrating a commitment to idiocy, angering the entire world in the process