BEIJING (Reuters) - China's military has become alarmed by what it sees as U.S. President-elect Donald Trump's support of Taiwan and is considering strong measures to prevent the island from moving toward independence, sources with ties to senior military officers said.
It was not clear whether any decisions had been taken, but the sources, who spoke on condition of anonymity, said the Taiwan issue had become a hot topic within the upper echelons of China's People's Liberation Army (PLA) in recent weeks.
Trump, due to take office on Jan 20, angered Beijing this month by speaking to Taiwan's president by telephone, breaking decades of precedent and casting doubt on his incoming administration's commitment to Beijing's "one China" policy. Beijing fears this could embolden supporters of independence in Taiwan.
"If Trump challenges 'one China' after becoming president, this would cross our red line," said another source, who has ties to China's leadership.
China's defence ministry declined to comment. An official at the ministry's news department said China's position was clearly laid out in the 2005 Anti-Secession Law, which authorises the use of force against Taiwan in the event China judges it to have seceded.
China claims self-ruled Taiwan as its sacred and inviolable territory and is deeply suspicious of President Tsai Ing-wen, whose ruling Democratic Progressive Party espouses the island's independence. Tsai, who took power this year, says she wants to maintain peace with China, but China is unconvinced.
Tsai said on Saturday that Taiwan will be "calm" when facing issues to do with China, but uncertainties next year will test the self-ruled island and its national security team.
"We're ready. If Taiwan wants to make trouble so can we. Let's hit them hard," said an official in Beijing who meets regularly with China's most senior military officers, including those who work directly with President Xi Jinping.
"We can hold exercises close to Taiwan, and show them the damage we could cause. Taiwan will have to give in then," the official added, citing a recent conversation with one of the military officers.
The United States is bound by law to provide Taiwan with the means to defend itself, but it's unclear if the United States would send troops in the event of war between China and Taiwan.
Washington also acknowledges Beijing's position that there is only one China and Taiwan is its territory.
A retired senior officer who maintains contacts with the PLA told Reuters that China probably wouldn't need to fire any missiles to bring Taiwan to its knees. China is Taiwan's largest trading partner, and Taiwan runs a huge trade surplus with China, worth $27 billion in 2015.
A U.S. defence official, who spoke on condition of anonymity, said Chinese actions had been more provocative in the past month, since Trump won the U.S. election and made comments about Taiwan.