Taiwan's Defense Ministry said Wednesday that China could acquire the ability to block the Taiwan Strait and its vicinity as early as 2025, posing a "grave challenge" to the self-governed island's air and sea defense operations.Defense Minister Chiu Kuo-cheng separately told Taiwan's legislature that military tensions with China are at their worst in over 40 years and that China would be fully capable of mounting an invasion of Taiwan in 2025.The minister called for the utmost efforts to beef up the island's defense.The projection about a Chinese blockade of the strait dividing mainland Chi…READ FULL ARTICLE