We also have our own national interests.

我们也有我们各自国家的利益。

Consider the national interests of the majority.

而国家考虑的是大多数人的利益。

These all run counter to the national interests.

这一切都是违背民族利益的。

It is in our national interests to have a stable euro.

稳定的欧元符合我们国家的利益。