The Fourth Taiwan Strait Crisis, also called the 2012-2013 Taiwan Strait Crisis, resulted from the People's Republic of China mobilizing for an invasion of Taiwan as a front to cover-up internal Solanum outbreaks within the mainland. In beginning days of November 2012, the People's Liberation Army began a massive exercise in the Guangdong Province, meant to simulate an amphibious assault on Taiwan. This was followed by ballistic missiles strikes and huge naval and aerial formations over the Straits of Taiwan. Following the massive Chinese exercise, Taiwanese President Ma Jing-yeo declared a state-of-emergency throughout Taiwan. The entirety of the ROC Armed Forces were mobilized for the first time since the 1995-1996 Strait Crisis including reservists while civil-defense plans were being enacted. At the same time, this was done to prepare Taiwan to handle the upcoming Solanum outbreak which was spreading into China's neighboring countries.
Despite the show of force, there were no casualties from the crisis. Only naval and air incursions occurred over Taiwan's EEZ, which were promptly escorted into international waters or airspace by the ROC Armed Forces.
It was notable the crisis began at the same week the United States would have its presidential elections. This caused international media sensation as the U.S. Navy's 7th Fleet was deployed to the region to assist in the defense of Taiwan.
After six months of tensions, the crisis abruptly ended as the Great Panic began and the international community realized the seriousness of the Solanum Virus and the uselessness of the Phalanx vaccine against the virus. Both sides immediately withdrew their forces to combat the hordes of zombies. Ironically, Taiwan outlasted China in handling the virus, becoming one of the few East Asian states that effectively combated Solanum as it only lost 10% of its population and territory from the zombies.