<answer>Reservations</answer> are essentially caveats to a state's acceptance of a treaty. <answer>Reservations</answer> are unilateral statements purporting to exclude or to modify the legal obligation and its effects on the reserving state. These must be included at the time of signing or ratification, i.e. "a party cannot add a reservation after it has already joined a treaty".
What are caveats to a state's acceptance of a treaty?
Reservations