An obscure reef in the South China Sea has become the latest flashpoint in China?s long-running campaign to dominate the South China Sea. Since last summer, the Chinese Coast Guard has repeatedly employed water cannons, lasers, and acoustic weapons and rammed Philippine Navy and Coast Guard vessels to prevent them from resupplying military personnel positioned at Second Thomas Shoal. The US labels China?s actions as violations of international law and has confirmed that its mutual defense treaty with the Philippines extends to attacks on Philippine vessels at sea. Jay Batongbacal, a lawyer and professor at the University of the Philippines College of Law, will discuss how this tiny maritime feature became a potential conflict site, why a 2016 ruling by an international tribunal in the Philippines? favor has not ended the dispute, and how international law can continue to be effective in the face of Chinese attacks. Peter Dutton, an adjunct professor of international law at NYU School of Law, will be the moderator.