Such a move would drag the Nuclear Suppliers Group (NSG) into the long-running tension between India and Pakistan.
Diplomats last year quietly launched a new push to induct India into the NSG - a 48-nation club dedicated to curbing nuclear arms proliferation by controlling the export and re-transfer of materials that could foster nuclear weapons development.
"Pakistan expressed confidence in its credentials to become full member of the export control regimes, particularly Nuclear Suppliers Group," the Foreign Ministry's official spokesperson said in a tweet.
Pakistan expressed concerns on the growing conventional imbalance and reiterated longstanding proposal for Strategic Restraint Regime (SRR)
— Ministry of Foreign Affairs - Pakistan (@ForeignOfficePk) May 17, 2016
The comment followed talks on Tuesday in Islamabad between Foreign Secretary Aizaz Chaudhry and US Under Secretary of State for Arms Control Rose Gottemoeller.
Obama urges Pakistan, India to scale down nuclear threat
The US Embassy in Islamabad declined to comment.
Membership of the NSG would increase India's international clout and provide a vested interest in curbing the world's most dangerous regional arms race, but the prospects are fraught.
The campaign for India membership is seen as carrying the risk of antagonising Pakistan as well as its ally China, which could veto any India application.
China could also insist as a condition of India's membership that Pakistan also be allowed to join, a potential hard sell because of Islamabad's development of new tactical nuclear weapons.
A further complication is that neither India nor Pakistan has signed the nuclear Non-Profileration Treaty, generally seen as a prerequisite to NSG membership. The Nuclear Suppliers Group is expected to hold its next meeting in June. The NSG was created in response to India's testing its first nuclear weapon in 1974.
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