PARIS (Reuters) -France's new Prime Minister Sebastien Lecornu and his government resigned on Monday, hours after Lecornu announced his cabinet line-up, making it the shortest-lived administration in modern French history and deepening the country's political crisis. The unexpected resignation came after allies and foes alike threatened to topple the new government, with Lecornu saying that meant he could not do his job. Opposition parties immediately urged President Emmanuel Macron to resign, or call a snap parliamentary election, saying there was no other way out of the crisis.
The Fifth Republic is inherently flawed. It creates two executives that come about from two different democratic mandates.
You also don’t have a political tradition of separation of powers which allows for some presidential autonomy in selecting political appointments in France. The French President is trying to assert his presidential right in selecting appointees from his party and the French Parliament is asserting tradition that the Prime Minister should be chosen by the largest coalition in Parliament.