Achilles heels "National sovereignty" is reflected in a country's ability to engage in diplomatic relations, but in this most critical area for national survival, Taiwan has long been suffering from PRC efforts to undercut Taiwan's international status. Indeed, as Levi C. Ying, an overseas Chinese legislator from the New Party, says, mainland China is the only real obstacle and enemy to Taiwan's foreign relations.
點中「死穴」外交是國家主權的延伸，但在此最重要的生存條件上，我國長期受中共打壓，新黨僑選立委營志宏形容，中共是我國外交上唯一的阻礙與勁敵。