For example, while the likelihood of an invasion threat is judged to be low, the Defense White Paper of 2004 argues that the SDF’s “most fundamental function” is to prepare for the worst, because sufficient defensive power cannot be developed overnight. In other words, Japan will clearly assert its will to defend the nation, and to prevent invasion in combination with the Japan-US security system.
不幸的是，日本新的安全战略的关键部分仍然模糊不清，自相矛盾。例如，虽然遭受侵略的可能性被认为很低，但2004年国防白皮书还是辩称自卫队“最基本的职能”是预防最糟糕的事件发生，因为充分的自卫能力不能在一夜之间产生。也就是说，日本明确声称它将结合日美安全制度保卫自己的国家，防止侵略。