Like other branches of international law, the law of armed conflict has no permanent means to secure its observance. Apart from the procedures established regarding prevention and supervision of breaches of the law, the surest guarantee of observance is compliance by a belligerent, even though reprisals or other retaliatory measures, such as the taking of hostages, are forbidden. Under the Geneva Conventions no party is able to absolve itself from liability, criminal or otherwise, for any grave breach of those Conventions. Protocol I introduced a new method of seeking to avoid breaches of the law or dealing with them when they occur. The greatest innovation effected by the Protocol in relation to supervision of its execution is the establishment of a permanent International Fact-Finding Commission which came into existence in 1992.