@Tsavo Lion Bro I take offense for what you posted, The American massacred a lot of native Filipino and we should be thankful WTF! Please google BALANGIGA BELLS and see what the Americans under Gen Jacob H. Smith did His orders included, "killing everyone over the age of ten" and make the island "a howling wilderness." Keep your opinion to yourself and please don't insult our intelligence.Vietnam, Malaysia, Indonesia & Philippines will close ranks vs. the PRC in the SC Sea & accept any help offered by Japan, UK, India & US, w/o necessarily joining a military bloc. The QUAD is acting on their behalf too, as it fits the interests of them all.
As for the argument that they didn't exist as states when the 11 dash line was 1st drawn, & therefore can't claim the areas within it, China should thank the European & US colonists. They r independent nations now & r the inheritors of states/kingdoms that existed there before their colonization, just like the PRC is the inheritor of the the Republic of China that existed before Japan seized all of Chinese coast & SE Asia.