President Obama outlined several concrete steps last year in a speech in Prague to strengthen our national security by reducing the role and numbers of nuclear weapons.

There are no restrictions, and I was very clear.

China's military modernization programs, including its nuclear modernization, are a significant concern which we watch closely.

While the United States and Russia frequently discuss the problems of Iran and North Korea pursuing development of nuclear weapons, this was not a topic of discussion in the negotiation of the bilateral New START treaty.

the bar for using nuclear weapons is extremely high.

This is an issue that, when your former colleague, President Obama, was in the Senate, was something that he believed to be a primary threat to the American people and the stabilization of the world community.

The United States strengthened its longstanding Negative Security Assurance by declaring that the United States will not use or threaten to use nuclear weapons against non-nuclear weapons states that are party to the Nuclear…

If you are a member of the NPT, and are clearly in compliance, then you have this exemption.

The President has made the NPT a central pillar in his nonproliferation agenda.

Last year, President Obama outlined several steps to strengthen our national security by reducing the role and numbers of nuclear weapons.

No one should doubt our resolve to hold accountable those responsible for such aggression.

We have to absolutely, unambiguously protect the things that we must protect.