i.e. we don't want [Russia/China/Whoever] to invade Country X as Country X is an ally and a democracy, but as Country X has [Oil fields/Chip Fab/Lithium Mine] we REALLY don't want them to invade.
Even a successful invasion of taiwan guarantees either the people important to the fab will leave, and the equipment evacuated, or destroyed if unable to evacuate.
Stating that the US has no allies other than Israel is unequivocally false.
If that's not an alliance, then you might as well say that alliances don't exist anywhere. (And maybe that is what you mean to say.)
Even the alliance with Israel can't compete with the alliance between the US and UK from World War I to now.
I'd argue North Korea & China have a closer relationship.