China is provoking tensions in the South China Sea by establishing a new city on a disputed island. But with the rule of law and diplomacy failing to provide a solution, what lengths will China go to to protect its territorial claims? On Friday, China named two senior military generals to head a garrison in the South China Sea - on a group of islands also claimed by Vietnam and Taiwan. The world's most disputed waters - Inside Story - Al Jazeera English "Multiple sides can cite different histories to justify their claims .... The big puzzle has been that for a decade, China made these claims very strongly initially but then cleverly stopped asserting them so blatantly .... But then for some reason, a couple of years ago, China started becoming a lot more belligerent and aggressive about its claims. And that led the other countries to start becoming more assertive about their counterclaims .... The interesting puzzle is why that change took place."