The MTCR restricts the proliferation of missiles, rocket systems, unmanned air vehicles, or drones, and the technology for systems capable of carrying a payload of 500 kilograms (1,100 pounds) for at least 300 kilometers (185 miles), as well as systems intended for the delivery of weapons of mass destruction. In 2008, India signed a landmark civil nuclear deal with the United States giving it some access to nuclear materials and technologies. [...] India has been pushing for its inclusion in the various elite groups that control the export of nuclear materials and regulate technologies relating to conventional, nuclear, biological and chemical weapons.