Peter Gordon MacKay (born September 27, 1965) is a Canadian lawyer and politician. He was a Member of Parliament in the House of Commons of Canada from 1997 to 2015. He was Minister of Justice and Attorney General (2013–2015), Minister of National Defence (2007–2013), and Minister of Foreign Affairs (2006–2007) in the Cabinet of Canada under Prime Minister Stephen Harper. MacKay was the last leader of the Progressive Conservative Party of Canada. He was the one that made the choice to combine the party with Harper's Canadian Alliance party in 2003 to create the Conservative Party of Canada.