THE balance of military power between China and Taiwan is shifting toward Beijing, leaving the island few options without US aid in the event of attack, a threat that has not eased despite warming ties. China has invested billions of dollars in its military, buying from Russia, developing itself advanced fighter jets and missiles, and slimming its once bloated ranks into a lean and high-tech military, analysts say. China is also considering building an aircraft carrier. Taiwan's forces, by contrast, are increasingly hobbled by outdated systems, unwillingness by almost every country but the United States to sell it weapons, lest China be angered, and by troop cuts as part of a strategic reduction. China has claimed sovereignty over self-ruled Taiwan since 1949, when Mao Zedong's Communists won the Chinese civil war and Chiang Kai-shek's Nationalists, or Kuomintang (KMT), fled to the island. Beijing has vowed to bring Taiwan under its rule, by force if necessary. Since taking office last year, Taiwan President Ma Ying-jeou has eased tension through trade and tourism deals, a far cry from his predecessor, Chen Shui-bian, who angered China with his support for formal independence. But military suspicion remains deep. “They've always had a quantitative edge over the Taiwanese, but the Chinese have really closed if not eliminated the qualitative edge the Taiwanese had for decades,” said Richard Bitzinger, senior fellow and Asian military expert at the S. Rajaratnam School of International Studies in Singapore. Economic reliance China's overwhelming military superiority, combined with Taiwan's deepening economic reliance on China and the island's growing diplomatic isolation, could force a resolution to the sovereignty issue even without a shot having to be fired. “That's the intention — to combine growing military leverage and a stronger military, to maybe eventually just present Taiwan with some kind of fait accompli about accepting reunification,” said Bitzinger. While Beijing's language has softened, it is in no mood to let the island go its own way, 60 years after Mao Zedong proclaimed the founding of his People's Republic of China. In July, Chinese Defense Minister Liang Guanglie, while noting “positive changes” in cross-Strait relations, pointedly did not offer to pare back forces aimed at Taiwan, nor renounce the use of force to bring the island under China's control. “We will firmly hold the theme of peaceful cross-Straits development ... oppose the secessionist activities of ‘Taiwan independence' forces and firmly safeguard China's sovereignty and territorial integrity,” he was quoted as saying in state media. China has reacted angrily to Taiwan's decision to allow Tibet's exiled spiritual leader, the Dalai Lama, to visit the island this week, in a reminder, if one were needed, that knotty political problems overshadow improving economic and cultural links. China brands the Dalai Lama a separatist. Taiwan estimates China still has 1,000 to 1,500 missiles aimed at the island and continues to expand its arsenal. “Given mainland China's state power and military might, most people wouldn't believe Taiwan could win a war by itself,” said Wu Den-yih, secretary-general of Taiwan's ruling KMT. The RAND Corp., a US-based policy research group, estimated in a recent report that short-range Chinese ballistic missiles could easily destroy the runways at every Taiwan airbase in a well-targeted initial strike to knock out the air force. Taiwan's navy could fare even worse. It has just four submarines, two of which date back to World War II and still have some of their original brass fittings. China has more than 50, a few believed to be armed with nuclear-tipped ballistic missiles. “One expects many of Taiwan's naval vessels will be destroyed very quickly. Taiwan's fighters and other aircraft would move to airbases where there are underground facilities,” said Wendell Minnick, Asia bureau chief with Defense News. “But, over time, and attrition, most of Taiwan's fighters would be destroyed or have few places to simply land and refuel.” Standoff remains While the prospect of war breaking out may seem remote at present, there are no guarantees that Taiwan, a boisterous democracy, would re-elect Ma in presidential elections in 2012. The anti-China main opposition Democratic Progressive Party could get back into power with a leader who supports de jure independence from China, which is the red line where Beijing has said it would consider attacking. In the event of an attack, the United States, which switched diplomatic recognition from Taiwan to China in 1979, is obliged by its Taiwan Relations Act to come to the island's defense. But how quickly it could come to the rescue, or whether it would have the stomach for a fight, are open questions. The Obama administration is re-evaluating Taiwan's “defensive needs” as a whole, US officials in Taipei have said.