APPEALS judges at the International Criminal Court upheld on Tuesday the conviction of former Congolese militia leader Bosco Ntaganda for war crimes and crimes against humanity, and confirmed his 30-year jail sentence. "Having rejected mister Ntaganda's grounds of appeal in their entirety, the appeals chamber hereby confirms the trial chamber's sentencing judgment," presiding judge Howard Morrison said. Ntaganda's lawyers had sought to overturn his conviction, saying the original trial was riddled with legal errors. But the appeals judges dismissed all of the almost 30 grounds of appeal raised against his conviction and sentence, the longest the court has handed down.…