Chinese Coast Guard vessel (L) blocks the ML Kalayaan chartered supply boat (R) during a mission to deliver provisions at Second Thomas Shoal in the South China Sea on November 10, 2023. (Photo by JAM STA ROSA / AFP) (Photo by JAM STA ROSA/AFP via Getty Images)

The Philippines has approached neighbors such as Malaysia and Vietnam to discuss a separate code of conduct regarding the South China Sea, its president said on Monday, citing limited progress towards striking a broader regional pact with China.

Relations between the two have grown more tense under President Ferdinand Marcos Jr, who has increasingly complained about China's "aggressive" behavior while rekindling strong ties with the Philippines' sole treaty ally, the United States.