Amid escalating tensions between the two South Asian neighbours, India stressed that the nuclear proliferation linkages active today have clear "Pakistan fingerprints".
The statement comes as part of India's Right of Reply to Pakistan during the UN debate on international security and disarmament.
Counsellor Siddhartha Nath representing India at the conference in Geneva said the biggest threat to peace and stability comes from active promotion of terrorism and an "unbridled" expansion of fissile material under the nexus between state and non-state actors. Islamabad had raised the Kashmir issue yet again at an October 10 session of UN First Committee, which deals with disarmament and international security.
"Nuclear proliferation linkages which are today active have clear Pakistan fingerprints," he said.
Pakistan permanent representative to the conference, ambassador Tehmina Janjua asked why India had not yet responded to his government's proposal for a bilateral nuclear test ban arrangement.
Last month, Nawaz Sharif in his UNGA address had expressed readiness to agree on a bilateral arrangement between India and Pakistan on a nuclear test ban.
In a strongly worded response, India said, "it is ironic that a country whose non-proliferation track record is marked by obstructionism seeks to convince the international community of its self-serving proposals."
"It is a matter of record that Pakistan is singularly responsible for blocking the international disarmament agenda and the Conference on Disarmament," he said.
Nath urged the international community to stand united "against those whose persistent violations increase nuclear threat and proliferation risks".
Pakistan had alleged that India conducted its first test in 1974 by "diverting" resources from a reactor that had been supplied for peaceful use and continued development of such weapons Pakistan's opposition.