Commemoration of Hiroshima and Nagasaki bombings

CTBTO Executive Secretary, Tibor Tóth, addresses commemorative ceremony in Vienna.

Commemoration of Hiroshima and Nagasaki bombings

The world must redouble its efforts to remove the threat of nuclear annihilation, a commemorative ceremony in Vienna marking the 65th anniversary of the atomic bombing of Hiroshima and Nagasaki was told by Tibor Tóth Executive Secretary of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO).

Read the CTBTO highlight here.

Watch the CTBTO video clip on its YouTube channel.

Listening for Nuclear Noise

Seismic and infrasound monitoring stations in a tranquil corner of Germany’s Bavarian Forest are part of the CTBTO's International Monitoring System that detected the North Korean nuclear tests in 2006 and in 2009.  In February 2010 they were among the CTBTO stations that alerted tsunami warning centers when an 8.8 magnitude earthquake struck Chile.

Watch the video clip on YouTube here.

Pacific Islands Forum Urges Members to Sign and Ratify the CTBT

Leaders of the 16 nation Pacific Islands Forum have urged all states to sign and ratify the Comprehensive Nuclear-Test-Ban Treaty (CTBT) “as a practical step toward nuclear disarmament” in a communiqué issued at their 41st meeting. They also stressed the practical value of the CTBT monitoring system, including for earthquake and tsunami warning networks in the Pacific.

Read the communiqué here and the CTBTO highlight here.


On-site inspection specialist carrying a magnetometer.

EU Council decision - EUR 5 million contribution to strengthen CTBTO verification readiness

The European Union Council (EU) has announced a €5,280,000 contribution to the Preparatory Commission for the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) to strengthen its monitoring and verification capabilities. Nuclear tests in North Korea in 2006 and 2009 not only demonstrated the importance of a universal ban of nuclear tests, they also underscored the need for an effective verification regime, the EU said.

Read the CTBTO press release here.


US President Barack Obama and President Dmitry Medvedev of Russia sign the new START Treaty during a ceremony in Prague, April 8, 2010.

New START: delayed vote has implications for CTBT ratification

A vote in the United States Senate on the New START arms control treaty with Russia has been delayed until the fall pushing back the rest of President Obama’s nonproliferation agenda, most notably, the ratification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). “CTBT is a heavy lift…wanting to do it is fine. Whether we can do it or not is still up in the air,” said Senator John Kerry, Democrat of Massachusetts and chairman of the Foreign Relations Committee.

Read the following articles to learn more about the issue:

Arms-Treaty Vote Delayed in the Senate

US-Russia nuke treaty facing hurdles in US Senate

New START — a sensible next step

Further U.S.-Russian Nuclear Talks Might Hinge on Armor Cuts, Analyst Says

What are the consequences if START ratification fails?

B-52 Planes are destroyed as part of the START treaty compliance.

New START and Nuclear Weapons Stockpile Management: A Reality Check

Daryl G. Kimball argues that the New START “does not affect the strategy or the funding requirements to maintain an effective nuclear arsenal without nuclear test explosions.” Furthermore, Kimball writes that “there is no technical or military reason to resume U.S. nuclear testing or to pursue new-design nuclear warheads to maintain and enhance the safety, security, and reliability of the U.S. nuclear arsenal,” contrary to beliefs of critics.

Read the article here.

United States and South Korea conduct joint military drills.

North Korea threatens “nuclear” response as South Korea and US hold joint military drills

The governments of South Korea and the United States – which accuse North Korea of sinking the South Korean corvette, the Cheonan – staged a four-day joint military exercise in the Sea of Japan. The war games, dubbed the “Operation Invincible Spirit”, were the largest joint drill in three decades. The drills ended without incident. Earlier North Korea threatened their “powerful nuclear deterrence”. 

Read the following articles to learn more about the issue:

As Tensions Rise, U.S. and S. Korea Begin Drills

N. Korea Vows Nuclear Response to Drills

US, SKorean troops drop anti-sub bombs in drills

South Korea keeps wary eye on North Korea during war games

India resists clause banning nuclear testing in nuclear power deal with Japan

India is opposing Japan’s efforts to include a clause that prohibits nuclear testing in a bilateral nuclear power cooperation pact. However, India, which has joined neither the Nuclear Non-proliferation Treaty nor the Comprehensive Nuclear-Test-Ban Treaty, insists that the clause is unnecessary as India will “abide by the unilateral voluntary moratorium.”

Read the following articles to learn more about the issue:

India opposes test clause in nuclear cooperation pact

Japan Engages a Nuclear India

Nuclear talks with Japan

India's Nuclear Push: The Conflicts Within