Article 69
A state of siege, like a state of emergency, shall be decreed by the President of the Republic. The National Assembly shall then convene as of right, if it is not already in session. The decree proclaiming the state of siege or a state of emergency shall cease to have effect after a period of 12 days, unless the National Assembly, at the request of the President, authorises its extension.

Article 74
The Constitutional Court may be seated for the purpose of having a law declared unconstitutional:
1.by the President of the Republic, within six full days following the completed transmission to him of the definitively adopted law;
2.by a number of Deputies at least equal to a tenth of the members of the National Assembly, within six full days following its definitive adoption.