The Philippine foreign secretary said Monday that China has been notified of “red lines,” or actions Manila would find unacceptable, in the South China Sea, including construction activities at a disputed shoal and extraction of oil and gas in the long-contested waters. After criticism of his administration’s “weak” response to Chinese bombers landing in South China Sea islands, President Rodrigo Duterte reiterated his belief that he has no other choice but to stay on China’s good side as the only other option is to go to war. Duterte should revisit his foreign policy following reports that China has installed anti-ship cruise missiles and surface-to-air missiles in the Spratly Islands, an independent think tank said as quoted by the Philippine Star.