AdvertisementThe Philippines said it spotted a Russian submarine in the waters of the South China Sea last week. The Philippines said it spotted a Russian submarine in the South China Sea last week, in the latest sign of tensions in the contested waters. This latest incident comes as tensions in the South China Sea have escalated this year, especially between China and the Philippines, an ally the US is treaty-bound to defend. AdvertisementThe presence of a Russian submarine in the contested waters may be a Russian signal to the US, one analyst said. AdvertisementRussia conducted joint military drills with China in the South China Sea in July and September.

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Persons: Ferdinand Marcos Jr, Kilo, Roy Vincent Trinidad, Hunter Marston, Eduardo Araral, Araral, Philippines Sari Arho Havrén Organizations: Armed Forces, Russian UFA, Philippine Navy, Inquirer, West Philippine, Facebook, TASS, Russian, Malaysian, Agence France, Presse, Australian National University, China, National University of Singapore, Strait Times, Pacific, Royal United Services Locations: Philippines, Russian, South, Russia, China, Vladivostok, Russia's Far, Malaysia, South China, Asia, Pacific, Philippine, Indonesian, Taiwan Strait