What year did Pakistan sign an agreement with China for their assistance in building nuclear power plants ?
India 's then External Affairs Minister Pranab Mukherjee said during a visit to Tokyo in 2007 : "" If India did not sign the NPT , it is not because of its lack of commitment for non-proliferation , but because we consider NPT as a flawed treaty and it did not recognize the need for universal , non-discriminatory verification and treatment .