The Thai army moves into the business district of Bangkok to prevent anti-government protesters entering the area.

• April 19, 2010

Iran, a country which the rest of the world fears is developing a nuclear weapon, is holding a conference on nuclear disarmament this week in response to this week’s U.N. nuclear security summit in Washington, D.C.

• April 15, 2010

The presidents of the USA and Ukraine, Barack Obama and Viktor Yanukovich, discussed on Monday issues of energy security and cooperation in that sphere.

• April 15, 2010

Initiative to hold a global nuclear security summit in Washington "was absolutely timely" and the summit itself was "crowned with a complete success," Russian President Dmitry Medvedev said Tuesday in a speech at the Brookings Institute on the results of the summit that had brought together the leaders of 47 countries, the UN, the International Atomic Energy Agency, and the European Union.

• April 14, 2010

World leaders agree to secure all vulnerable nuclear material within four years, President Obama says.

• April 14, 2010

Chinese President Hu Jintao left here Monday morning for the upcoming Nuclear Security Summit on April 12-13 in Washington at the invitation of the U.S. President Barack Obama. Hu will deliver a speech stressing the

• April 13, 2010

World leaders at a security summit in the US hear dire warnings about nuclear material falling into the wrong hands.

• April 13, 2010

Iran asks the UN to investigate Western actions in Afghanistan and Iraq amid growing nuclear tensions.

• April 13, 2010