The concurrence of an absolute majority of all Deputies and an absolute majority of all Senators is required for the adoption of a resolution declaring a state of war or a resolution granting assent to sending the armed forces of the Czech Republic outside the territory of the Czech Republic or the stationing of the armed forces of other states within the territory of the Czech Republic, as well as with the adoption of a resolution concerning the Czech Republic's participation in the defensive systems of an international organization of which the Czech Republic is a member.