MANILA / BEIJING — June 12, 2026
China has barred Philippines Defence Secretary Gilberto Teodoro Jr. from entering Chinese territory, according to two Philippine government officials briefed on the matter, in the sharpest diplomatic escalation between the two nations over the South China Sea in more than two years. The ban, delivered through diplomatic channels on Wednesday, cited what Beijing described as “continued provocative conduct” by Philippine vessels near contested reefs, the officials said.
The development came as the Philippines announced it would deploy additional coast guard patrol ships to the contested waters, and as the United States reaffirmed its binding treaty obligations to Manila under the 1951 Mutual Defence Treaty. The Pentagon said it was “closely monitoring” the situation and called on both sides to “exercise restraint and respect international law.”
Philippine President Ferdinand Marcos Jr. convened an emergency national security council meeting late Wednesday and ordered the foreign ministry to summon China’s ambassador for formal protests. “This is not a minor incident,” a senior Philippine official told reporters outside the Malacañang Palace. “It is a deliberate act of escalation by Beijing, and we will respond accordingly.”
China’s foreign ministry confirmed the ban in a statement Thursday morning Beijing time, accusing Teodoro of making “irresponsible remarks” during a regional security forum in Singapore last week. “China reserves the right to deny entry to individuals who have repeatedly interfered in its internal affairs and violated its sovereignty,” the statement read. The ministry did not elaborate on which specific remarks prompted the ban.
The South China Sea has been a flashpoint between China and the Philippines since 2022, when Manila began rotating supply missions to the Ayungin Shoal — a submerged reef claimed by both nations — with visible U.S. military backing. China’s coast guard has used water cannons and laser illumination against Philippine vessels on multiple occasions, drawing condemnation from Washington and European Union capitals.
Analysts warned the latest escalation risked drawing in external powers. “The Teodoro ban is a signal that Beijing is willing to use visa restrictions as a foreign policy tool, something it has historically reserved for its closest neighbors,” said Dr. Aileen Morpara-Reed, a senior fellow at the ISEAS-Yusof Ishak Institute in Singapore. “The risk is that this normalizes a new tier of pressure against smaller claimants.”
The United Nations Convention on the Law of the Sea underpins the Philippines’ legal position. Manila filed a formal challenge with an international tribunal in 2013, winning a landmark ruling in 2016 that invalidated China’s sweeping historical claims across roughly 90 percent of the South China Sea. Beijing has refused to acknowledge the ruling.
Japan and Australia issued joint statements Thursday expressing concern and calling for unimpeded freedom of navigation in the disputed waters. Japan’s defence ministry said it was “deeply concerned about the pattern of coercive behaviour” and announced it would increase naval patrol cooperation with the Philippines under a 2023 coast guard agreement. Canberra offered to provide a third rotation vessel for the upcoming joint patrol schedule.
The confrontation is the most severe since January 2024, when Chinese vessels used projectiles against a Philippine resupply boat near the Second Thomas Shoal, injuring several Filipino personnel. That incident prompted the Biden administration to impose visa restrictions on Chinese coast guard officials — a measure expanded by the Trump administration earlier this year to cover defence ministry personnel.
Marcos is expected to address the nation Friday morning. Philippine government sources said Manila is also weighing whether to request a formal emergency session of the UN Security Council, though no decision had been made as of Thursday evening.
Regional observers noted that Beijing’s decision to single out Teodoro by name was unusual and pointed to a deliberate strategy of targeting specific Filipino officials rather than issuing generic warnings. “This is personalising the pressure,” said Aaron Rong, a researcher at the CSIS Asia programme in Washington. “It’s a message to Manila: we know who you are, and we can reach you individually.” The Philippines has previously condemned China’s use of blacklists and informal sanctions against its officials as incompatible with diplomatic norms.