Do we really care if two Communist Parties attack each other?
China and Vietnam have fought a war with each other more recently than either has fought the US.
In our lifetime we will again see the US Navy based at Cam Ranh Bay, and the USAF based at Tan Son Nhut. (Same with Subic and Clark in the Philippines.)
New Zealand will cave and sell out, long before any war comes along. It’s bad for business to have principles, and we have stuck to that course over multiple China issues and multiple governments. ‘Our’ politicians (are they ours or Chinas?) have had financial interests in China throughout their terms and there was even a Chinese communist party member and trained Chinese intelligence member in our parliament.
We picked our side.
https://i.stuff.co.nz/national/300054428/parliamentary-inqui...
https://i.stuff.co.nz/national/politics/122094310/jian-yang-...
Perhaps you couldn't say the same thing about Vietnam (I don't know enough about it), but you definitely could about Philippines.