Deeply regrets what?

Xipe Totec

1. Deeply regrets what?

That Israel is the only Middle East country that refused to sign?

or that

Israel is the only Middle East country that has nuclear weapons?

Source: Reuters
The United States said on Friday it "deeply regrets" that the final declaration agreed by the 189 signatories of the nuclear Non-Proliferation Treaty singles out Israel for not signing the pact.

U.S. Undersecretary of State Ellen Tauscher told a treaty review conference that Washington would work with countries in region to organize a successful conference on creating a zone free of weapons of mass destruction in the Middle East.

But she said the U.S. ability to do that "has been seriously jeopardized because the final document (approved by treaty signatories) singles out Israel in the Middle East section, a fact that the United States deeply regrets." LinkHere