Washington, April 12 (DPA) US President Barack Obama Sunday praised South Africa for voluntarily dismantling its nuclear weapons programme as he met with South African President Jacob Zuma on the eve of a major summit on nuclear terrorism.

It was the first meeting between the two leaders in Washington since Zuma’s 2009 election.

Obama used the opportunity to outline the goals of the summit Monday and Tuesday, which is drawing 38 leaders and top officials from another nine countries.

“The single biggest threat to US security, both short term, medium term and long term, would be the possibility of a terrorist organization obtaining a nuclear weapon,” Obama said.

“If there was ever a detonation in New York City, or London, or Johannesburg, the ramifications economically, politically and from a security perspective would be devastating,” he said.

The central focus of the summit is to get commitments from the top levels of government to recognise nuclear terrorism as a major global threat, to get commitments to current conventions on nuclear terrorism and to develop a work plan, White House officials said.

South Africa had been developing a nuclear weapons programme from the 1960s onward, reportedly in collaboration with Israel, but as the end of apartheid loomed in the 1990s, the South African government dismantled all its nuclear weapons.

It was the first country in the world to do so. Kazakhstan followed suit after the break-up of the Soviet Union.

“South Africa has special standing in being a moral leader on this issue,” Obama said.

The move brought South Africa “greater security and prosperity” in the international community, noted Ben Rhodes, a White House official who talked to reporters.