China's assertive and unsafe behavior in the South China Sea has made crashes more likely, experts say. Questions remain on what China will do next.

The Philippines expressed serious concern on Tuesday over what it called "dangerous manoeuvres and unlawful interference" by Chinese vessels during a coast guard supply mission for Filipino fishermen in the Scarborough Shoal in the South China Sea.

Chinese ships collide in pursuit of a Philippine vessel in the South China Sea:::: At SeaA Chinese Navy ship and a China Coast Guard vessel collided near the disputed Scarborough Shoal while pursuing a Philippine patrol vessel,

OVER THE SCARBOROUGH SHOAL, South China Sea -A Chinese jet fighter "intercepted" a Philippine aircraft carrying journalists during a patrol flight over the Scarborough Shoal on Wednesday, the Manila government said,