1. Affirmatives especially should look for definitions that involve "yielding to the authority of." For example, from dictionary.com:
to give over or yield to the power or authority of anotheror, perhaps
to defer to another's judgment, opinion, decision, etc.Either of these avoids the negative connotations that involve "surrender."
2. Really, though, the best definition might involve providing an example of the entire phrase, "submit to the jurisdiction of." In layperson's terms, this means that the United States would grant the international court the authority to prosecute its citizens. What if a U.S. general were brought to trial, say, for arresting and detaining inmates held at Guantanamo who were later released without punishment? If the international court found the general guilty, even though he had not been prosecuted under U.S. law, affirming the resolution would mean deferring to the court's judgment, for good or ill. (There are many other crimes considered "crimes against humanity;" this article is extremely helpful.)
3. As always, your thoughts, comments, and questions are appreciated.