"Islamabad is producing fissile material, adding to related production facilities, and deploying additional delivery vehicles. These steps could enable Pakistan to undertake both quantitative and qualitative improvements to its nuclear arsenal," the report said.
"Whether and to what extent Pakistan's current expansion of its nuclear weapons-related facilities is a response to the 2008 US-India nuclear cooperation agreement is unclear.
Islamabad does not have a public, detailed nuclear doctrine, but its 'minimum credible deterrent' is widely regarded as designed to dissuade India from taking military action against Pakistan," it said.
"It is worth noting that Pakistani officials have expressed interest in concluding a nuclear cooperation agreement with the United States, which would require congressional approval," said the report titled 'Pakistan's Nuclear Weapons: Proliferation and Security Issues'.
Noting that Pakistan has in recent years taken a number of steps to increase international confidence in the security of its nuclear arsenal, the report however said instability in Pakistan has called the extent and durability of these reforms into question.
