Washington: The world's major industrialised nations have pledged to eliminate weapons of mass destruction by providing more teeth to nuclear watchdog IAEA (International Atomic Energy Agency) and unveiled an action plan to ensure safe air travel against terrorist strikes, including boosting passenger screening and enhancing intelligence sharing to deter threats.

World leaders at the Group of Eight meeting at Savannah, Georgia expressed "serious concerns" about North Korea and Iran and urged "universal" adoption of the International Atomic Energy's Additional Protocols, which expands the IAEA's tools to verify nuclear activity.

The summit severely criticised North Korea and Iran and called for complete, verifiable and irreversible dismantlement of Pyongyang's nuclear programme and asked Iran to comply fully with its Nuclear Non-proliferation Treaty obligations and all IAEA Board requirements.

Determined to prevent, contain, and roll back proliferation, leaders of the eight most wealthy nations advocated expansion of the IAEA by establishing a new Special Committee of the IAEA Board of Directors and urged states under the nuclear watchdog's probe not to participate in decision regarding their cases.

Leaders of Britain, France, Canada, Germany, Italy, Japan Russia and the United States also outlined the need to expand the work of the Proliferation Security Initiative (PSI), to Disrupt and dismantle proliferation networks, such as that of disgraced Pakistani nuclear scientist A Q Khan.