Summary: Chen Shui-bian listed five conditions on using cruise missiles against Mainland China.

　　陈水扁前几天说了用导弹反击大陆的五个前提条件：1、只用于战术打击（only be used tactically）；2、用于自卫（in self-defence）；3、不以普通居民为袭击目标（without targeting the general public）；4、获当局授权（with the nod from security authorities）；5、预先与美国沟通（communicate with the US beforehand）。

　　孔哲文先生（Eric Hagt）在回复本站的邮件中指出：The first four are fluff of course, and the last would likely prevent Taiwan from ever doing so. Unless "communicate" means inform without asking permission, which in this political climate wouldn't be unthinkable. Still, the whole idea seems a little preposterous. Effective self-defense hardly seems a viable option for Taiwan, or will change the balance, even with a missile to reach Beijing or knock out a satellite or two.

　　在另一封邮件中，他特别强调：The last one（注：指与美国沟通）, as I said, is the most interesting, and if real, would make the US nervous, as it would provide Taiwan with an option to strike offensively at China. That's an unlikely scenario but in a volatile political climate, worst case scenarios have to be thunk and planned for. This is probably why the last condition was added (to reassure the U.S.) and I think makes its use highly inconceivable that it would be used in any conflict scenario that doesn't involve the U.S. It could also be a ploy to show the U.S. That Taiwan does have options for self-defense and is a way to show Taiwan's displeasure with Washington's recent slide toward Beijing, with official rebuffing of the UN referendum. Still, the whole idea of this actually making a difference in power balance across the Strait seems exagerrated. A missile that can reach Beijing would only ratched up the cross-strait tension and would unlikely change the military balance.

　　以上评论只代表孔哲文先生个人意见，不反映世界安全研究所的正式立场。