Pakistan appears to be building a fourth military nuclear reactor, signalling its determination to produce more plutonium for atomic weapons, a US-based think-tank said.
The Institute for Science and International Security (ISIS), a think-tank specialising in nuclear proliferation issues, said it had obtained commercial satellite images from mid-january.
They showed “what appears to be a fourth reactor under construction at Pakistan’s Khushab nuclear site,” ISIS experts David Albright and Paul Brannan said in the Feb. 9.
“Pakistan is determined to produce considerably more plutonium for nuclear weapons.”
Pakistan’s mission to the Vienna-based International Atomic Energy Agency (IAEA), the UN nuclear watchdog, was not immediately available for comment.
Pakistan has made clear its opposition to global talks to ban future production of nuclear bomb-making material, arguing that existing stocks of plutonium and enriched uranium should be included to counter India’s advantage.
India is believed to hold about 100 warheads and Pakistan 70 to 80, according to the Washington-based Arms Control Association

ISLAMABAD, Feb 10 : Pakistan on Thursday Successfully conducted test fire of indigenously developed Cruise Missile Hatf-7 (Babur) having a range of 600 kms. According to ISPR, Babur can carry payload of strategic and conventional warheads. Having stealth capabilities, and the terrain hugging,the missile can fly low. The Cruise Missile has high maneuverability, pin point accuracy and radar avoidance features. It also incorporates the most modern cruise missile technology of terrain counter matching and digital scene matching and areas correlation.Chairman Joint Chiefs of Staff Committee, officers and scientists witnessed the test. 
The President Asif Ali Zardari and the Prime Minister Yousaf Raza Gillani have congratulated the scientists and engineers for successful conduct of the test.