Kazakhstan, once home to Moscow's atomic bomb tests, offered on Monday to host a global nuclear fuel bank, part of a U.S.-backed plan to put all uranium enrichment under international control.

Speaking alongside visiting Iranian President Mahmoud Ahmadinejad, President Nursultan Nazarbayev of the former Soviet republic told reporters he could consider the idea.

"If such a nuclear fuel bank were to be created, Kazakhstan would be ready to consider hosting it on its territory as a signatory of the nuclear non-proliferation agreement and as a country that voluntarily renounced nuclear weapons," he said.

The idea, supported by U.S. President Barack Obama, rests on the creation of a global repository that would allow countries to tap into its reserves to fuel their nuclear plants without having to develop their own nuclear enrichment capability.

The bank is due to be supervised by the International Atomic Energy Agency (IAEA). Open for discussion.