Stéphane Maurice Dion (; ; born 28September 1955) is a Canadian diplomat, academic and former politician who served as the Canadian ambassador to France and Monaco from 2022 to 2025 and special envoy to the European Union from 2017 to 2025. He previously was leader of the Opposition and leader of the Liberal Party from 2006 to 2008. He served in cabinets as intergovernmental affairs minister (1996–2003), environment minister (2003–2006), and foreign affairs minister (2015–2017).
Before entering politics, Dion was a professor of political science at the Université de Montréal. His research focused on Canadian federalism and public administration. Throughout his tenure in government, Dion held a number of portfolios. He was first named Minister of Intergovernmental Affairs by Prime Minister Chrétien in 1996, following the aftermath of the 1995 Quebec sovereignty referendum. His reference question to the Supreme Court of Canada, produced Reference Re Secession of Quebec and his Clarity Act, which provided guidelines for subsequent referendums. He returned to the backbench in 2003 when Paul Martin became the prime minister and dropped a number of ministers in an effort to disassociate himself from the former Chrétien government. After the 2004 election however, he returned to Cabinet as Minister of Environment, where he was in charge of implementing the Kyoto Protocol and chaired COP 11/CMP 1 when Montreal hosted the UN climate conference in 2005.
The Liberal government lost the 2006 election and Martin resigned as leader. Dion campaigned to replace him and subsequently won the party leadership election. Dion ran on an environmental platform in the 2008 federal election, but was defeated by the Conservatives led by Prime Minister Stephen Harper in one of the Liberals' worst electoral showings. After a subsequent parliamentary dispute, he was replaced as leader by Michael Ignatieff. Dion continued to sit as the member of Parliament for Saint-Laurent. In 2015, the Liberal Party returned to power and Dion was named Minister of Foreign Affairs under Prime Minister Justin Trudeau, serving until 2017, when he left politics to enter the diplomatic service.
Early and personal life Dion was born on 28 September 1955 in Quebec City, the second of five children. His mother, Denyse (née Kormann), was a real-estate agent born in Paris, France, and his father, Léon Dion, was a Quebec academic. Dion holds dual citizenship in France because of his French-born mother. Dion was raised in a modest home on boulevard Liégeois in Sillery, today part of Quebec City. While growing up, he remembers being taunted for his family's secularism in a society which was then predominantly Roman Catholic.
Dion was involved with the sovereignty movement, first as a teenager attending a Jesuit college in Quebec City, and later as a university student campaigning for Parti Québécois candidate Louise Beaudoin in the 1976 election. Dion described his experience as follows:
Dion has said that his involvement as "an activist for the separatist cause" ended during a five-hour discussion with a federalist household while he was going door-to-door for the PQ, but he did not openly commit to federalism until much later. At the time of the 1980 referendum, his sentiments were neutral. In his own words, the 'no' victory left him "neither moved nor outraged. To tell the truth, I felt no particular feeling." (Moi, je ne me sentais ni ému ni révolté. À vrai dire, je n'éprouvais aucun sentiment particulier.) (en français seulement)
He studied political science at Université Laval in the department co-founded by his father; this was also where he met his future wife, Janine Krieber, a fellow student in the same program. In April 1986, Stéphane Dion married Krieber, and later the same year, they travelled to Peru to adopt their only child, Jeanne Krieber-Dion. His wife is an "expert in strategic studies and counter-terrorism issues," who teaches political science and sociology at Royal Military College Saint-Jean in Saint-Jean-sur-Richelieu.
Education and academic career (1977–1996) After Dion obtained BA and MA degrees in 1977 and 1979 respectively (his master's thesis presented an analysis of the evolution of Parti Québécois electoral strategies), he and Krieber departed together for France.
Dion spent four years in Paris, living with Janine in the Montmartre district and studying public administration under the supervision of noted sociologist Michel Crozier. After receiving a doctorate (doctorat d'état) in sociology from the Institut d'études politiques de Paris (commonly known as Sciences Po), Dion worked briefly as a teaching assistant at the Université de Moncton in 1984 before moving on to the Université de Montréal to assume an assistant professor position. Dion taught there from 1984 to January 1996, specializing in public administration and organizational analysis and theory, and was a guest scholar at the Brookings Institution in Washington, D.C., during a 1990–91 sabbatical leave.
After the failure of the Meech Lake Accord in 1990, Dion directed his intellectual inquiry towards an analysis of Quebec nationalism. His decisive conversion to federalism, as he later recounted to journalist Michel Vastel, occurred as he was preparing for a presentation in Washington:
In this period, the sovereignty movement had begun to promote the idea that federalism was inefficient for Quebec due to the duplication and overlap between the two levels of government. An expert in public administration, Dion emerged as a key figure in publicly criticizing this line of argument. His appearances on Le Point, a Télévision de Radio-Canada current affairs program, brought him to the attention of Aline Chrétien, who in the days following the close referendum defeat urged her husband, Prime Minister Jean Chrétien, to recruit him.
Between 1987 and 1995, Dion published a number of books and articles on political science, public administration and management. A collection of Dion's speeches and writings on Canadian unity was published under the title Straight Talk (Le pari de la franchise) in 1999. Dion was also a guest scholar at the Laboratoire d'économie publique de Paris from 1994 to 1995, a co-editor of the Canadian Journal of Political Science from 1990 to 1993, and a research fellow at the Canadian Centre for Management Development (now part of the Canada School of Public Service) from 1990 to 1991.
Political career (1996–2017)
Minister of Intergovernmental Affairs (1996–2003) In anticipation of by-elections in early 1996, Prime Minister Jean Chrétien appointed two new "star candidates" from Quebec — Stéphane Dion and Pierre Pettigrew – to Cabinet. On 25 January 1996, Dion was named Minister of Intergovernmental Affairs, Pettigrew was named Minister for International Cooperation, and both were sworn into the Queen's Privy Council for Canada.
Chrétien felt safe in appointing Dion to Cabinet because Dion was slated to run in Saint-Laurent—Cartierville, the second-safest Liberal riding in Quebec. In 25 March by-election, he was easily elected. This was not without precedent; in 1941, Mackenzie King had appointed Louis St. Laurent to Cabinet after nominating him to run in a safe Quebec riding. Dion would hold the riding in general election of 1997, and was re-elected again in the 2000, 2004, 2006, 2008, 2011, and 2015 elections. Dion continued to serve as Minister of Intergovernmental Affairs until the end of Jean Chrétien's ministry on 12 December 2003.
Clarity of referendum question In his responsibilities as Intergovernmental Affairs minister in the Jean Chrétien government, Dion was tasked with challenging the arguments of the Quebec sovereignty movement much more vigorously than in the pre-referendum period. The people of Quebec voted against the sovereignty option by a razor-thin margin (50.58% to 49.42%). Many federalists in Ottawa were caught off-guard by the results and believed that the referendum results would have no legal standing under Canadian law. The strongest complaints were on the presumed ambiguity of the 1995 question and that Quebec had tabled a law reserving the right for the National Assembly to declare independence unilaterally if constitutional negotiations with the Government of Canada failed.
Supreme Court reference re secession of Quebec On 30 September 1996, Dion submitted three questions to the Supreme Court of Canada constituting the Supreme Court Reference re Secession of Quebec:
Under the Constitution of Canada, can the National Assembly, legislature, or government of Quebec effect the secession of Quebec from Canada unilaterally? Does international law give the National Assembly, legislature, or government of Quebec the right to effect the secession of Quebec from Canada unilaterally? In this regard, is there a right to self-determination under international law that would give the National Assembly, legislature or government of Quebec the right to effect the secession of Quebec from Canada unilaterally? In the event of a conflict between domestic and international law on the right of the National Assembly, legislature, or government of Quebec to effect the secession of Quebec from Canada unilaterally, which would take precedence in Canada?
As soon as these questions were made public, both parties of the National Assembly, the Bloc Québécois and numerous federalists denounced Ottawa's gesture. An Act respecting the exercise of the fundamental rights and prerogatives of the Québec people and the Québec State was passed in the National Assembly of Quebec by the Parti Québécois government two days after the Clarity Act had been introduced in the Canadian House of Commons.
On 20 August 1998, the Supreme Court answered, concluding that Quebec does not have the right to secede unilaterally under Canadian or international law. However, the federal government would have to enter into negotiations with the Quebec government if Quebecers expressed a clear will to secede. It confirmed that the Canadian Parliament had the power to determine whether or not a referendum question was clear enough to trigger such negotiations. The Canadian constitution would remain in effect until terms of secession were agreed to by all parties involved, and these terms would have to respect principles of democracy, minority and individual rights as outlined in the Canadian constitution.
Both the Government of Quebec and the Government of Canada publicly stated that they were very pleased with the opinion of the Supreme Court, which stated both that Quebec could not legally separate unilaterally from Canada and that the Parliament of Canada would have a 'political obligation' to enter into separation negotiations with Quebec in the event that a clear majority of its populace were to vote in favour of independence.
Three letters