A US congressional report state that India's neighbour has built hard and deeply buried storage and launch facilities to retain a second strike capability in a nuclear war. It also has built road-mobile missiles, air defences around strategic sites, and concealment measures.
The report which is published in two parts, the first dealing with Pakistan"s efforts to develop latest weapons, and second with its survival strategies in a nuclear war, said Islamabad has also developed road-mobile missiles, and strengthened its air defence around strategic nuclear sites.
The report also expressed US concern that the instability in Pakistan may result in terrorist outfits getting hold of the country's nuke arsenals.
In the recent times, several experts have expressed their concerns about misuse of Pakistan"s nuclear weapons, with the Taliban consistently inching closer towards Islamabad.
They believe that while nuclear weapons are currently under firm control, with warheads disassembled, technology could be proliferated by insiders during a crisis.