The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a key instrument of the nuclear non-proliferation and disarmament regime. This notion and the call for the Treaty's early entry into force were reiterated by many States Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) during the first session of the Preparatory Committee for the 2010 NPT Review Conference, 30 April - 11 May 2007. The meeting took place in Vienna which is also the seat of the Preparatory Commission for the CTBTO.

The NPT is the cornerstone of the nuclear non-proliferation and disarmament regime. It aims to prevent the spread of nuclear weapons and weapons technology, to achieve nuclear disarmament and to promote cooperation in the peaceful uses of nuclear energy. Every five years State Parties gather to review progress made in the implementation of the NPT.

The NPT is the cornerstone of the nuclear non-proliferation and disarmament regime. It aims to prevent the spread of nuclear weapons and weapons technology, to achieve nuclear disarmament and to promote cooperation in the peaceful uses of nuclear energy. Every five years State Parties gather to review progress made in the implementation of the NPT.

The following remarks were made by States during the general debate:

• Strong support for the CTBT and its entry into force is one of the steps towards achieving a nuclear-weapons-free world.
• The CTBT is a valuable instrument in the promotion of peace and international security.
• The nuclear disarmament and non-proliferation regimes would greatly benefit from the CTBT's entry into force.
• Observing the moratorium on nuclear testing is a significant measure, but cannot substitute legal obligations arising from the CTBT.
• Efforts need to be redoubled to complete the outstanding ratifications required for the Treaty to enter into force.