The US intelligence assessment highlights Pakistan's near-certain procurement of weapons of mass destruction-applicable goods from foreign suppliers, primarily through Chinese support.
The United States is worried over the safety of Pakistan's nuclear assets and believes that they are 'vulnerable', as the army continues to consider India as a prime threat.
Pakistan's extremist Islamic leaders would gain power if President Pervez Musharraf was assassinated or replaced, a top US intelligence official told the Senate Intelligence Committee on Wednesday.
The potential for miscalculation between India and Pakistan remains high, Director of the US Defence Intelligence Agency, Vice-Admiral Lowell E Jacoby, said.
It is unlikely Brigadier Raja Rizwan was working for RA&W, notes Rana Banerji, who headed the Pakistan desk at the Research and Analysis Wing, India's external intelligence agency.