One of the demands of the Muslim Brotherhood is to change the constitution to involve parliament in appointing prime ministers.

VOA: special.2011.02.05

Indeed, at a time when the politics of climate change has played a part in the removal of two prime ministers and two opposition leaders - Brendan Nelson and Malcolm Turnbull - Bob Brown has turned this nettlesome issue to his party's advantage.

BBC: Greens enjoy taste of power in Australia's parliament

She is officially the head of state of 16 countries that used to be part of the British Empire, has met presidents and prime ministers, and has seen the world change beyond recognition during her reign.

CNN: Queen Elizabeth celebrates 60 years on throne