BORACAY, Philippines (AP) — The Philippines' top diplomat said Tuesday it remains to be seen whether China will cooperate fully in ongoing efforts to craft a legally binding pact designed to prevent aggressive behavior in the disputed South China Sea. China, however, has opposed a legally binding agreement that could block its actions to assert its claim to virtually the entire South China Sea, a senior Southeast Asian diplomat involved in the negotiations for the nonaggression pact told The Associated Press. When China seized Philippine-claimed Mischief Reef in 1995, the Manila government strongly protested and took steps that led to the start of negotiations for a regional accord with China to discourage actions that might spark armed confrontations. China and rival claimant countries, however, have traded accusations of violating the 2002 pact, which urged them to "exercise self-restraint in the conduct of activities" and refrain "from action of inhabiting on the presently uninhabited islands, reefs, shoals, cays, and other features."