This is because the new administration believes that nuclear weapons and related material pose gravest threat to the people of the US, White House said on Tuesday, releasing the Foreign Policy agenda of the new President.

"The gravest danger to the American people is the threat of a terrorist attack with a nuclear weapon and the spread of nuclear weapons to dangerous regimes," said the White House in its agenda document revealing key elements of its foreign policy.

President Barack Obama and Vice President Joe Biden will secure all loose nuclear materials in the world within four years, it said.

Stating that the new administration has set a "goal of a world without nuclear weapons" the White House said it will pursue it.

"While working to secure existing stockpiles of nuclear material, Obama and Biden will negotiate a verifiable global ban on the production of new nuclear weapons material. This will deny terrorists the ability to steal or buy loose nuclear materials," it said.

"Obama and Biden will crack down on nuclear proliferation by strengthening the Nuclear Non-Proliferation Treaty so that countries like North Korea and Iran that break the rules will automatically face strong international sanctions," it added.

Observing that the new administration will always maintain a strong deterrent as long as nuclear weapons exist, the White House said it will take several steps down the long road toward eliminating nuclear weapons.

"They (Obama and Biden) will stop the development of new nuclear weapons; work with Russia to take US and Russian ballistic missiles off hair trigger alert; seek dramatic reductions in US and Russian stockpiles of nuclear weapons and material; and set a goal to expand the US-Russian ban on intermediate-range missiles so that the agreement is global," it said.

As a US Senator, Obama had adopted a bipartisan approach to secure nuclear weapons and materials. He joined the Republican Senator Dick Lugar's in passing a law to help the US and its allies detect and stop the smuggling of weapons of mass destruction throughout the world.