NUCLEAR SECURITY SUMMIT

Erdogan spoke optimistically about the resumption of nuclear negotiations.

After months of international tensions, long-stalled nuclear talks between Iran and foreign leaders will resume on April 13.

An open mic oversight ended in embarrassment for Obama and Medvedev. What 'missile defense' issue were they discussing?

There are estimated to be almost 20,000 nuclear warheads in the world, with about half of them in Russia.

Over the weekend, Obama warned that time is running out on Tehran.

The Nuclear Security Summit in the South Korean capital ended on Tuesday with world leaders making fresh commitments towards building a safer world devoid of nuclear terrorism. The summit ended with a joint declaration, dubbed the Seoul Communique. The full text of the declaration, published by South Korea's official news agency Yonhap News, is below:

Japan moved away from the agenda of the two-day nuclear security summit on Tuesday to criticize North Korea's plans for a rocket launch next month.

The three governments worked closely with the International Atomic Energy Agency (IAEA) on the project.

As heads of state gathered for talks, demonstrators chanted: No nukes Asia, no nukes Korea, No nukes [America], no nukes anywhere! Many cited the disaster at power plants hit by the March 2011 earthquake and tsunami in Japan as proof of nuclear power's inherent risks.

Gilani will also meet directly with President Barack Obama to try to repair the fractured ties between Pakistan and the U.S.

Australia has blocked China's Huawei Technologies Co Ltd HWT.UL from tendering for contracts in the country's $38 billion National Broadband Network (NBN) due to cyber security concerns, Huawei said on Monday.

Leading up to the nuclear summit in South Korea this week, Obama and Hu both expressed their serious concern about the launch, which was first described by North Korea as a peaceful launch of an earth observation satellite.

South Korea wrested one-upmanship from the belligerent North on Monday by issuing a stern warning that it might shoot down a rocket that Pyongyang is planning to launch next month.

Obama holds out prospect of cuts in US nuclear arsenal as he tries to rally world leaders against threat of nuclear terrorism.

Obama traveled to a US military base located at the edge of the 2.5 mile wide DMZ and greeted the soldiers there, as a symbolic reassurance of its support to South Korea.

President Obama was en route to South Korea Saturday for a two-day international nuclear security summit in Seoul as North Korea prepares to launch a satellite into space via rocket in April.

North Korea has warned it won't tolerate any criticism on its planned satellite launch. North Korea has threatened the critics of its nuclear weapons program that any denigration would be considered a declaration of war, New York Times reported.

Pyongyang officials said such rhetoric may be akin to a declaration of war.

The U.S. would like to ultimately recharge talks on disarmament, a process that would involve as total of six nations -- North Korea, South Korea, U.S., China, Russia and Japan.

President Barack Obama said his focus on nuclear disarmament had strengthened U.S. diplomacy in dealing with North Korea and Iran, and he warned Tehran faced growing consequences over its nuclear program.