generate questions: Reservations are essentially caveats to a state's acceptance of a treaty. Reservations 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? {sep_token} What are unilateral statements purporting to exclude or to modify the legal obligation and its effects on a state? {sep_token} When must reservations be included in a treaty? {sep_token} What are parties to a treaty forbidden to do after they have already joined a treaty? {sep_token} A reserving party to a treaty may include a statement that attempts to do what to its legal obligations or their effects?