Prime minister leader, the incoming leader will usually be referred as "prime minister-in-waiting". An example or this situation was in 2016 in the United Kingdom when Theresa May was elected leader of the Conservative Party while David Cameron was still prime minister. Ukraine's constitution (1996) lists the powers, functions and duties of the Prime Minister of Ukraine. Most prime ministers in parliamentary systems are not appointed for a specific term in office and in effect may remain in power through a number of elections and parliaments. For example, Margaret Thatcher was only ever appointed prime minister on "one" occasion, in 1979. She
Margaret Thatcher of the Hadley Centre for Climate Research and Prediction, the establishment of the Intergovernmental Panel on Climate Change, and the ratification of the Montreal Protocol on preserving the ozone. Thatcher helped to put climate change, acid rain and general pollution in the British mainstream in the late 1980s, calling for a global treaty on climate change in 1989. Her speeches included one to the Royal Society in 1988, followed by another to the UN General Assembly in 1989. However, after retiring as Prime Minister, she became sceptical about climate change policy and rejected climate alarmism. Thatcher appointed Lord Carrington, a