United States has entered into a civil nuclear cooperation agreement with India because it was an "exceptional case", a senior State Department official said, and ruled out negotiating any such pact with Pakistan.

Pak wants nuke deal with US

"We view India as an exceptional case, and see civil nuclear cooperation as a mechanism to deepen further India's commitment to international nonproliferation," Under Secretary of State for Arms Control and International Security Robert G Joseph said.

"Some have asked whether it might be possible to extend such cooperation to Israel and Pakistan--the only other 2 (de facto weapon) states that did not join the NPT," he said, adding that India, Israel and Pakistan were each unique and required different approaches.

'US aware of Pak's defence needs'

"Neither Pakistan nor Israel has a civil nuclear energy programme that approximates that of India. US has no plans to seek full civil nuclear cooperation with Israel or Pakistan," he told the House International Relations Committee in Washington.

People had questioned the rationale behind inking a civil nuclear cooperation pact with India as it was not a signatory to the Nuclear Nonproliferation Treaty and why a cap on India's production of fissile material for weapons was not part of the deal. The US recognises that India was a special case and see a clear need to come to terms with it, he said.

'Pak allowed China examine US jet'

"India has informed us that it has no intention of becoming a party to the NPT as a non-nuclear state at this time. Despite this, it is important to seize this opportunity to assist India in becoming a more constructive partner in our global nonproliferation efforts," he added.