Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Observers Say China's Denial of Unofficial Median Line in Taiwan Strait Fuels Unnecessary Tensions Joyce Huang China showed no sign of easing its military intimidation against Taiwan on Monday after reportedly flying another military transport aircraft near the airspace of the island, which it views as a renegade province. Reports say the plane flew over Taiwan's air defense identification zone, or ADIZ, but did not cross the so-called Taiwan Strait median line separating China from the self-ruling island. There has been no comment from Taiwan defense officials on the reported incursion. China has recently increased military activity around Taiwan, including flying fighter jets across the boundary, which Taipei views as "a symbol of preventing military confrontations" with the mainland. Although a Taiwan official has told the Chinese to "back off," Beijing now says the line is non-existent as it views Taiwan as part of its territory. Beijing has not ruled out the use of force to unite the two sides. Analysts warn that China's repeated use of such crossings and military flyovers will only backfire while fueling unnecessary tension in the region. "The Taiwan Strait median line is a stabilizing mechanism in the cross-Strait military relationship which the Mainland-side has unilaterally abrogated, significantly worsening the regional security situation," said Drew Thompson, a visiting senior research fellow at the Lee Kuan Yew School of Public Policy at the National University of Singapore Monday, in a written reply to VOA. The unofficial line, drawn in the 1950s reportedly by U.S. General Benjamin Davis to separate the two sides in conflict, has succeeded for decades in reducing the risk of accidents with the mainland and Taiwan sticking to their side of the strait. .