The United States, Australia, Canada and the Philippines staged joint air force and naval drills in what they said was a show of force to promote the rule of law in the disputed South China Sea, where China has increasingly asserted its territorial claims.
The only one disputing it is China. Everyone else seems to stay in their lane.
Everyone who disagrees with China is also disputing it, that’s how dispute works.
Not really, there are a lot of overlapping claims that involve multiple other countries. https://en.m.wikipedia.org/wiki/Territorial_disputes_in_the_South_China_Sea