China Conquers Polynesia

America’s Navy has been the undisputed leader in the Pacific since WWII. Now, China plans to change that.
By conquering French Polynesia. A nuclear weapon lost during one of dozens of French nuclear tests has been discovered there by rebels. Who will use it to force France out of Polynesia.
On their own, the rebels might have little chance.
Unless China’s Navy intervenes to help them achieve independence before the French military can respond.
China will call it a “peacekeeping mission.”
French and Russian agents are already in French Polynesia, trying to locate and capture the missing nuclear weapon. Can they do it in time?
Will anyone help the French stand up to China? If not, can France resist alone?
Or will China become the greatest Pacific power?