The title of the article asks WHY?
It gives it answer which can be summarized with one word - CHINA
In recent months, Chinas neighbours and the US have argued that Beijing has sped up its militarisation of the South China Sea, which has included regularly flying fighter patrols over the disputed waters, and sending Chinese Coast Guard vessels into the area.
In April, the Chinese Navy also sailed a battle group, led by the countrys first aircraft carrier, the Liaoning, past Taiwans east coast.
China claims sovereignty over the majority of the South China Sea the area is marked by a nine-dash line which cuts through a swathe of its neighbours territorial claims.
Duterte loves China