 However, with the exceptions of Judges Shigeru Oda (Japan) and Sir Robert Jennings (UK), he disagreed profoundly with interpretation of what constitutes an armed attack, under international law, by one state on another.The Court's majority found that, under international law, the arms provided by Nicaragua to the pro Nicaraguan insurgent group in El Salvador did not constitute an armed attack on the state of El Salvador by Nicaragua and, as a result, the United States did not have a right under article 51 of the U.N. Charter to collective self-defense in support of its ally El Salvador.Judge Schwebel, however, felt that the scale of involvement by Nicaragua crossed a threshold of what, under customary international law, would be considered an armed attack by one state on another.