  Consensual secession results either from a negotiated agreement between the state and the secessionists (as occurred when Norway seceded from Sweden in 1905) or through constitutional processes (as the Supreme Court of Canada recently envisioned for the secession of  Quebec).[1]   Constitutionally sanctioned secession is achieved either by the exercise of an explicit constitutional right to secede (which only a few constitutions currently contain) or by constitutional amendment.