This apparently walks back from a Bush-era declaration that underscored the possibility that the United States might use nuclear weapons if it suffered a chemical or biological attack.

这显然是走回布什时代的宣言，强调了美国可能会使用核武器如果它受到了化学或生物武器的袭击的可能性。

youdao

Such a missile would also have the inherent capability of delivering nuclear, chemical or biological weapons virtually anywhere in the world.

CENTERFORSECURITYPOLICY: Iraq��s Missile Program Shows Urgent Need For SDI

Those on Mr Bush's worry-list have nuclear, chemical or biological weapons, or are trying hard to get them, despite treaty promises not to.

ECONOMIST: America and the bomb

"The world has now come together to say that the outlaw regime in Iraq will not be permitted to build or possess chemical, biological or nuclear weapons, " the President said.

CENTERFORSECURITYPOLICY: bushpowellrummy