States have the right to enter into a treaty or not enter into it. A treaty may or may not affect or predict how the State may act, as treaties are broken frequently. Treaties that reflect actual international practices and internationally-accepted principles seem most likely to result in being followed cooperatively. Treaties are much like a marriage vow: they are agreements that rarely constrain actors who wish to go against them. A State is not less sovereign by cooperating with other States in a treaty agreement, just as a spouse has not lost free will by voluntarily following the vows made in marriage. Cooperation and agreement between nations seems to make them each and collectively stronger and more sovereign, not less so.
Answered on Dec 19th, 2012 at 5:41 AM