In 1955, US general Benjamin Davis Jr, then-commander of the US’ 13th Air Force, drew a maritime demarcation line in the middle of the Taiwan Strait, known as the median line. Under pressure from the US, Taiwan and China entered into a tacit agreement not to cross the line.
On July 9, 1999, then-president Lee Teng-hui (李登輝) described cross-strait relations as a “special state-to-state” relationship.
In response, Beijing dispatched People’s Liberation Army (PLA) aircraft into the Taiwan Strait, crossing the median line for the first time since 1955.
The PLA has begun to regularly traverse the line. On Sept. 18 and 19, it dispatched multiple waves of aircraft from different directions and flying at different altitudes. The aircraft crossed the median line in a harassing attack. It was a signal that China no longer recognizes the median line.
The Ministry of National Defense earlier this month specified the definition of a “first strike” in its rules of engagement as “the right to self-defense.” This means that Taiwanese fighter pilots must wait for their PLA adversaries to fire the first shot, then request permission to return fire, which must be granted at the ministerial level.
Under the new rules of engagement, even if PLA aircraft enter the nation’s airspace, Taiwanese pilots have been deprived of the right to exercise their independent judgement and carry out a legitimate, pre-emptive strike in self-defense.
Once PLA pilots become aware that Taiwanese pilots are no longer allowed to independently return fire, they might gain a taste for harassing them and further push the boundaries: Give a knave an inch and he will take a mile.
The PLA might adopt this salami-slicing strategy to erode the airspace for Taiwanese pilots to conduct contingency training.
Under the combat readiness regulations, a first strike outside the nation’s airspace requires authorization at the ministerial level. However, inside Taiwan’s 12 nautical mile (22.2km) territorial airspace, the combat commander can authorize a first strike at their discretion.
A few seconds is a lifetime in modern combat. Under the updated regulations, the air battle for the Taiwan Strait would be over before the authorization is received — and many Taiwanese pilots’ lives would be needlessly sacrificed. This change to the rules of engagement might have a serious impact on the morale of Taiwan’s frontline fighter pilots.
Worse still, pre-emptive self-defense is entirely legitimate under customary international law. Following the Caroline affair of 1837, the “Caroline test” established the concept of “anticipatory self-defense.” It states that the use of pre-emptive force is justified if four tests are satisfied: First, the threat must be imminent; second, no other options are available; third, there is an instant and overwhelming necessity to act, and; fourth, the response must be proportionate to the threat.
The National Security Council’s adoption of a “no first strike” rule is a strategic political decision, not a military one. Since Taiwan is faced with the threat of an attack from a substantially more powerful enemy, this is understandable. As the military is at its core a political instrument, political objectives must sometimes override military considerations.
However, with PLA airplanes and ships conducting near-constant encirclement drills around Taiwan, a responsible government would not restrict its military from the self-defense option of conducting a legitimate pre-emptive strike. After all, the use of force to resist invasion and maintain peace is the purist definition of a “just war.”
Lin Tai-ho is a professor at National Chung Cheng University’s Institute of Strategic and International Affairs.
Translated by Edward Jones
We are used to hearing that whenever something happens, it means Taiwan is about to fall to China. Chinese President Xi Jinping (習近平) cannot change the color of his socks without China experts claiming it means an invasion is imminent. So, it is no surprise that what happened in Venezuela over the weekend triggered the knee-jerk reaction of saying that Taiwan is next. That is not an opinion on whether US President Donald Trump was right to remove Venezuelan President Nicolas Maduro the way he did or if it is good for Venezuela and the world. There are other, more qualified
This should be the year in which the democracies, especially those in East Asia, lose their fear of the Chinese Communist Party’s (CCP) “one China principle” plus its nuclear “Cognitive Warfare” coercion strategies, all designed to achieve hegemony without fighting. For 2025, stoking regional and global fear was a major goal for the CCP and its People’s Liberation Army (PLA), following on Mao Zedong’s (毛澤東) Little Red Book admonition, “We must be ruthless to our enemies; we must overpower and annihilate them.” But on Dec. 17, 2025, the Trump Administration demonstrated direct defiance of CCP terror with its record US$11.1 billion arms
China’s recent aggressive military posture around Taiwan simply reflects the truth that China is a millennium behind, as Kobe City Councilor Norihiro Uehata has commented. While democratic countries work for peace, prosperity and progress, authoritarian countries such as Russia and China only care about territorial expansion, superpower status and world dominance, while their people suffer. Two millennia ago, the ancient Chinese philosopher Mencius (孟子) would have advised Chinese President Xi Jinping (習近平) that “people are the most important, state is lesser, and the ruler is the least important.” In fact, the reverse order is causing the great depression in China right now,
As technological change sweeps across the world, the focus of education has undergone an inevitable shift toward artificial intelligence (AI) and digital learning. However, the HundrED Global Collection 2026 report has a message that Taiwanese society and education policymakers would do well to reflect on. In the age of AI, the scarcest resource in education is not advanced computing power, but people; and the most urgent global educational crisis is not technological backwardness, but teacher well-being and retention. Covering 52 countries, the report from HundrED, a Finnish nonprofit that reviews and compiles innovative solutions in education from around the world, highlights a