China has agreed to a US$9.1 billion deal in which it will sell two nuclear reactors to its longtime ally Pakistan, The Wall Street Journal reported. The deal has raised concerns that China is overstepping international rules on transferring nuclear technology. The reactors will be technologically advanced and built outside the southern city of Karachi. Each will provide 1,000 megawatts of electricity, which is needed for the power-starved country. The first reactor will arrive in 70 to 80 months. China will also provide 82% of the financing through a loan.