He urged other nations to join in an effort to free the world of nuclear weapons.

VOA: special.2009.04.11

The Russian leader also praised U.S.President Barack Obama's recent call for a nuclear-weapons-free world, calling it a "beautiful and right goal."

VOA: standard.2009.12.25

"We are working with our partners to stop the spread of nuclear weapons and to seek a world free of nuclear weapons.

VOA: standard.2010.02.06

Analysts expect him to try to examine, with Israeli leaders, how tentative progress might be made on creating a nuclear weapons free Middle East.

BBC: NEWS | Middle East | Spotlight on Israel's nuclear facilities

Barack Obama's vision of a nuclear-weapons-free world into a policy prescription known as the Nuclear Posture Review.

CENTERFORSECURITYPOLICY: Disarmer-in-Chief

On the wider front, Barack Obama endorsed the call last year by four senior former US diplomats (including Henry Kissinger) for the US to aim for a nuclear weapons-free world, as it is supposed to be under the Nuclear Non-Proliferation Treaty.

BBC: Top 10 foreign challenges for Obama