I agree, and think partnering with the likes of Japan and South Korea is a good approach. Oddly, I have a feeling if push came to shove, that Vietnam wouldn't ally with China. I have heard that there is some genuine pro-American sentiment there, and it is hard to believe given their history that they would ally with China, even if they still are communists.
I wonder about Australia. I always loved meeting Aussies over the years (never been there) but I always appreciated that they fought with us in Vietnam, and regarded them as somewhat legendary from our WWII alliance. But I have heard strange things over the last decade, especially since COVID, that make me wonder.
I'm concerned also, it goes back to the Civil War, some Aussies joined the Confederates, others sided with the Union, but didn't join.