India on Monday signed a pact governing U.N. inspections of its civilian nuclear plants, a key step toward implementing a U.S.-engineered accord allowing India to import nuclear materials and technology, according to Reuters. India will be required to make 14 of 22 nuclear reactors subject to regular non-proliferation inspections by 2014 under the terms of the deal with the International Atomic Energy Agency (IAEA), the U.N.'s non-proliferation watchdog. IAEA oversight was stipulated when the 45-nation Nuclear Suppliers Group agreed in September to lift a three-decade ban on nuclear trade with India, imposed for its past nuclear tests and refusal to join the Non-Proliferation Treaty (NPT). Washington pushed through the NSG "waiver" after concluding its own nuclear cooperation pact to supply India with nuclear technology. U.S. officials said the deal would forge a strategic partnership with the world's largest democracy, help India to meet rising energy demand and open up a nuclear market worth billions of dollars. The ban on nuclear commerce with India had been in place since 1974, when India conducted its first atom bomb test. Ending India's nuclear isolation has drawn international criticism since it remains outside the NPT, meant to stop the spread and production of nuclear weapons, and a companion international agreement banning nuclear tests. Critics say the deal, a major plank in former U.S. president George W. Bush's foreign policy, could undermine efforts to prevent the spread of nuclear weapons and sets a precedent allowing other nations to seek to buy such technology without submitting to the full range of non-proliferation safeguards. An Indian delegation was in talks last week about an "Additional Protocol" agreement with the IAEA, which would give inspectors more information on India's nuclear-related exports, imports and source material, an agency official said. Before the U.S. Congress approved the deal in October, the Bush administration had to certify that India had made "substantial progress" towards adopting the Additional Protocol. The Protocol would give inspectors wider access to India's nuclear programme but not as much as in countries that have signed the NPT.