Australia has launched its largest military exercises with Philippine forces, involving over 3,600 personnel in live-fire drills and a beach assault near the South China Sea.

A Chinese Navy vessel and a Chinese Coast Guard ship recently collided in the South China Sea while engaging with a Philippines Coast Guard vessel. The incident occurred on Aug. 11 and was captured on video by personnel aboard the Philippines Coast Guard vessel the BRP Suluan.

Footage shows a Chinese coast guard vessel chasing a Philippine boat and then ramming a Chinese warship. It was the latest confrontation in the contested waters.