The countries that are still signed up to the agreement held urgent talks with Iranian officials in Vienna in hope of persuading Tehran to hold off.
Russia also signalled it may be willing to give some ground
Following the pacts, there have been specific agreements for import of uranium from France, Kazakhstan, Australia, Canada and Russia
It's the first time Japan has concluded such a pact with a country that is not signatory of Nuclear Non-proliferation Treaty
Japan has been demanding additional non-proliferation guarantees from India before exporting nuclear reactors.