Reference Re Secession of Quebec

Reference Re Secession of Quebec, [1998] 2 SCR 217 is a landmark judgment of the Supreme Court of Canada regarding the legality, under both Canadian and international law, of a unilateral secession of Quebec from Canada.
Both the Quebec government and the Canadian government stated they were pleased with the Supreme Court's opinion, pointing to different sections of the ruling.
Background.
Following the election of a majority of Parti Québécois (PQ) Members of the National Assembly (MNAs) in the 1976 Quebec provincial election, the party formed a government and, in 1980, held an independence referendum. The government of the Province of Quebec asked the province's population if it should seek a mandate to negotiate sovereignty for Quebec coupled with the establishment of a new political and economic union with Canada. The referendum resulted in the defeat of the sovereignty option, with 59.6% voting no on sovereignty. The PQ was nevertheless re-elected in 1981, this time promising not to hold a referendum.
In 1982, the federal government petitioned the Parliament of the United Kingdom in London to amend Canada's constitution so that, in the future, all further amendments would take place by means of a process of consent involving only the Parliament of Canada and the legislatures of the provinces. Up until this point, all amendments had taken place by means of Acts of the British Parliament, since the Canadian constitution was, strictly speaking, a simple statute of that Parliament. 
Colloquially, the switch to a domestic amendment procedure was known as patriation. The particular amending formula adopted in 1982 was opposed by the then-government of Quebec. Other concomitant constitutional changes such as the "Canadian Charter of Rights and Freedoms" were also opposed by Quebec, although not necessarily based on rejection of their content but to the manner of their adoption and lack of amendments specific to Quebec in the package. (Also, at that time, Quebec had a more complete "Quebec Charter of Human Rights and Freedoms", which had been adopted in 1975.)
Subsequently, two attempts were made at amending the Canadian constitution (the Meech Lake Accord in 1987–1990 and the Charlottetown Accord in 1992) that, it was hoped, would have caused the Quebec legislature to adopt a motion supporting the revised constitution. Following the failure of both of these to pass, there was a widespread sense in the mid-1990s that the Constitution of Canada was not fully legitimate because it had not yet received the formal approval of Quebec.
In 1994, the Parti Québécois was re-elected and announced that it would be initiating a second referendum to take place in 1995. This time, the question was on sovereignty with an optional partnership with Canada. The "no" side won by only a narrow margin. Prior to this referendum, the National Assembly of Quebec had adopted a bill relating to the future of Quebec that laid out a plan if secession was approved in a referendum.
In response to the bill and the referendum result, several legal actions were initiated by opponents to the independence of Quebec questioning the legality of secession. In 1996, Parti Québécois leader Lucien Bouchard announced his government would make plans to hold another referendum when he was confident that the "winning conditions" were there, pointing to the political cost of losing a third referendum. In reaction to Bouchard's stated plans, Prime Minister Jean Chrétien initiated a reference on the legality of a unilateral declaration of independence by a Canadian province.
Questions addressed.
The Governor in Council (effectively, the Cabinet of Canada) submitted the request for an advisory opinion on the following three specific questions:
Submissions.
There were an unprecedented 15 interveners. However, the Quebec government refused to take part and was not represented. In its place the Court appointed André Jolicoeur as an to present the argument Quebec may have made, had they participated.
The federal government's submission argued that the only way a province could secede from Canada would be through a constitutional amendment. Only an amendment through section 45 (on the right of provincial legislatures to make laws amending their own constitutions) would allow for unilateral constitutional amendments, they argued, but that section would not apply to the question of secession. To attempt to secede unilaterally (that is, without negotiations) would violate the constitution on two grounds. First, it would violate the rule of law by ignoring the authority of the constitution as supreme law of the country, and second, it would violate Canadian federalism by acting with powers allocated only to the federal government.
The s submission argued several points. First, it argued that the reference was invalid; the question is purely a political one and thus is outside the authority of the Court to answer under section 52 of the Supreme Court Act. It attempted to analogize the use of the US political question doctrine to the Canadian constitution. Furthermore, the question is speculative and premature as there are no substantive facts at question. Second, it focused on the second question, claiming that the Supreme Court of Canada had no jurisdiction over interpreting international law. The submission said that though Quebec could be considered a "peoples" under the Charter of the United Nations, the right to self-determination under that Charter applies to colonized, oppressed, etc. peoples and therefore does not apply to Quebec. It further claimed that since there is no international law barring separation then there must be an implied right to do so. The primary argument was that the doctrine of effectivity gave them authority to secede. That is, recognition of a new state by other countries would validate the separation. It further claimed that the doctrine of effectivity is part of constitutional conventions through its practice in other parts of the commonwealth.
Several aboriginal interveners submitted on their right to stay in Canada based on treaties and their right to self-determination, further noting that they have already held two referendums, which decided against the separation of the aboriginal peoples from Canada. Their attacked the Attorney General's on the basis that it completely ignored the role of aboriginal people within the constitution.
Opinion.
Right to secede under Canadian law.
The court addressed the three questions in order. First, they stated that, under the Canadian Constitution (and with Quebec being a party to it since its inception), unilateral secession was not legal. However, should a referendum decide in favour of independence, the rest of Canada "would have no basis to deny the right of the government of Quebec to pursue secession." Negotiations would have to follow to define the terms under which Quebec would gain independence, should it maintain that goal. In this section of the judgement they stated that the Constitution is made up of written and unwritten principles (based on text, historical context, and previous constitutional jurisprudence) and that there are four fundamental tenets of the Canadian constitution. Those four interrelated and equally important principles or values are:
They held that these pieces cannot be viewed independently but all interact as part of the Constitutional framework of Canada.
Rights to secede under international law and self-determination.
The answer to the second question, which concerned Quebec's right under international law to secede, gave the opinion that the international law on secession was not applicable to the situation of Quebec. The court pointed out that international law "does not specifically grant component parts of sovereign states the legal right to secede unilaterally from their 'parent' state."
The Supreme Court of Canada's opinion stated that the right of a people to self-determination was expected to be exercised within the framework of existing states, by negotiation, for example. Such a right could only be exercised unilaterally under certain circumstances, under current international law. The court held that:
and that
The court stated in its opinion that, under international law, the right to secede was meant for peoples under a colonial rule or foreign occupation. Otherwise, so long as a people has the meaningful exercise of its right to self-determination "within" an existing nation state, there is no right to secede unilaterally.
The Supreme Court further stated that: Quebec could not, despite a clear referendum result, purport to invoke a right of self-determination to dictate the terms of a proposed secession to the other parties to the federation. The democratic vote, by however strong a majority, would have no legal effect on its own and could not push aside the principles of federalism and the rule of law, the rights of individuals and minorities, or the operation of democracy in the other provinces or in Canada as a whole.
Which law applies in Canada?
Since the court saw no conflict between Canadian law and international law on the question (neither would allow Quebec to secede unilaterally), it considered it unnecessary to answer the question.
Significance.
The decision has been regarded as a model discussion in international law for questions of separation between national political entities, particularly in relation to the results of a referendum.
The Quebec government of Lucien Bouchard stated that it was very pleased with the opinion of the Supreme Court. Premier Bouchard stated publicly that the court had validated the referendum strategy that the sovereigntists had adopted with René Lévesque. Quebec was most satisfied when the court made it clear that the question of Quebec's political status was above all a political question, not a legal one. It also liked the fact that the Supreme Court made it clear that the government of Canada and that of the other provinces would have to negotiate after a winning referendum on secession. This would make a unilateral declaration of independence unnecessary.
The Canadian government of Jean Chrétien stated that it was pleased with the court's opinion. The Supreme Court had made it clear that Quebec could not declare independence unilaterally. Any obligation of Canada to negotiate with Quebec was conditional on the sovereigntists' asking a clear question within the context of a referendum. The government of Canada subsequently drafted the Clarity Act, which Parliament then enacted.