A convoy of civilian boats attempting to deliver supplies to Filipino fishermen and troops in the South China Sea was forced to abort their trip due to "constant shadowing" by Chinese vessels. A collision occurred between Filipino and Chinese vessels, leading to a serious escalation. Both countries have lodged diplomatic protests and the Chinese ambassador has been summoned by Manila. The Philippines accuses China of causing damage to one of its vessels and Filipino troops remain determined to defend their nation's sovereignty. China's Coast Guard targeted Filipino vessels, disabling one and endangering the crew. The Philippines claims China is responsible, while China argues that Filipino vessels ignored warnings. The Chief of Staff of the Armed Forces of the Philippines was reportedly on board one of the attacked vessels.