Earlier this month, China declared new "baselines" around Scarborough Reef, a large coral atoll topped by a handful of rocks barely above sea level in the South China Sea.

The Philippines has rejected new Chinese ‘baselines’ over the Scarborough Reef, saying they are a violation of its sovereign rights.

The Chinese and Russian military aircraft flew "for an extended period without prior notice," South Korea's defense ministry said.

On Friday, Chinese and Russian military aircraft intruded into South Korea's air defense identification zone, prompting Seoul to scramble fighter jets. Early Friday morning, five Chinese and six Russian military aircraft entered South Korea's air defense identification zone (ADIZ) without prior notice.

On Friday, Chinese and Russian military aircraft intruded into South Korea's air defence identification zone, prompting Seoul to scramble fighter jets. Five Chinese and six Russian military aircraft entered South Korea's air defence identification zone (ADIZ) early Friday morning without prior notice.