The government institutional organisation authorised to make critical decisions about Pakistan's nuclear posturing is the Pakistan National Command Authority (NCA), the genesis of which was in the 1970s and has been constitutionally established since February 2000. The NCA is composed of two civic-military committees that advises and console both Prime minister and the President of Pakistan, on the development and deployment of nuclear weapons; it is also responsible for war-time command and control. In 2001, Pakistan further consolidated its nuclear weapons infrastructure by placing the Khan Research Laboratories and the Pakistan Atomic Energy Commission under the control of one Nuclear Defense Complex. In November 2009, Pakistan President Asif Ali Zardari announced that he will be replaced by Prime Minister Yusuf Raza Gilani as the chairman of NCA. The NCA consists of the Employment Control Committee (ECC) and the Development Control Committee (DCC), both now chaired by the Prime Minister. The Foreign minister and Economic Minister serves as a deputy chairmen of the ECC, the body which defines nuclear strategy, including the deployment and employment of strategic forces, and would advise the prime minister on nuclear use. The committee includes key senior cabinet ministers as well as the respective military chiefs of staff. The ECC reviews presentations on strategic threat perceptions, monitors the progress of weapons development, and decides on responses to emerging threats. It also establishes guidelines for effective command-and-control practices to safeguard against the accidental or unauthorised use of nuclear weapons.