Taiwan's air force scrambled armed fighters on Sunday to intercept Chinese jets that flew around the island claimed by Beijing as its own, in a move denounced by Taiwan's Defence Ministry as a threat to regional peace and stability.

China has been flying what it calls "island encirclement" drills since 2016 when Taiwan President Tsai Ing-wen took office for the first time.

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Beijing believes Tsai, who won re-election last month, wishes to push the island's formal independence. She says Taiwan is an independent country called the Republic of China, its official name.

In a statement, Taiwan's Defence Ministry said Chinese J-11 fighters and H-6 bombers flew into the Bashi Channel to the south of Taiwan, then out into the Pacific before heading back to base via the Miyako Strait, located between Japan's islands of Miyako and Okinawa, to the northeast of Taiwan.

"During this period, the national military appropriately used air reconnaissance aircraft and air defence forces in accordance with combat readiness regulations," it said.

It provided a picture of a Taiwan air force F-16 shadowing one of the Chinese H-6 bombers. Taiwan's official Central News Agency said the scrambled F-16s carried live missiles.

"The Chinese Communist's long-range far-out-at-sea missions have impacted regional security and stability and endanger the peace and welfare shared by all parties in the region," the ministry said.

China's Eastern Theatre Command, in a statement late on Sunday carried by the official People's Liberation Army Daily, said the aircraft carried out "real combat-oriented training".

"Taiwan and its island are sacred and inalienable parts of China. The Chinese military's combat ready patrol was a completely legitimate and necessary action aimed at the current situation in the Taiwan Strait and safeguarding national sovereignty."

Cross-strait tensions

The fly-by came as Taiwan's Vice President elect, William Lai, was returning from a visit to the United States, where he attended the high-profile National Prayer Breakfast, at which US President Donald Trump spoke. China has denounced Lai's trip.

Relations between Taipei and Beijing have further deteriorated in the past few weeks amid the outbreak of the new coronavirus in China, with Taiwan accusing China of preventing the island from accessing full information from the World Health Organization (WHO) or attending its meetings.

Taiwan is not a WHO member because of China's objections. China insists the self-ruled island which is one of the region's most vibrant democracies is merely a Chinese province whose interests in the health body are adequately represented by Beijing.

In a small diplomatic breakthrough for Taiwan, the WHO said Taiwanese experts will participate this week in an online meeting of experts about the virus.

Taiwan's Foreign Ministry said this was a "good start" and it ould strive to take part in more WHO events.

Taiwan's WHO troubles last week became another flashpoint in Sino-US ties, with the US ambassador to the United Nations in Geneva telling the agency to deal directly with Taiwan's government, drawing a sharp rebuke from China