Since then, a consensus has emerged in favor of the 1958 constitutional structure, because it has provided France with the strong executive it had always lacked. De Gaulle’s constitution has also proved flexible enough to allow France to overcome several crises – Algeria, May 1968, de Gaulle’s resignation, changes of government from right to left, and antagonism between left-wing presidents and right-wing prime ministers or vice-versa (“la cohabitation”), as occurred in 1986, 1993, and 1997.