 India's bilateral trade with Europe and US has more than doubled in the last five years.However, India has not signed the CTBT, or the Nuclear Non-Proliferation Treaty, claiming the discriminatory nature of the treaty that allows the five declared nuclear countries of the world to keep their nuclear arsenal and develop it using computer simulation testing.Prior to its nuclear testing, India had pressed for a comprehensive destruction of nuclear weapons by all countries of the world in a time-bound frame.