GENEVA (Reuters) – Israeli and Palestinian leaders should launch investigations of alleged war crimes in Gaza to help rebuild trust and support peace, the U.N. High Commissioner for Human Rights said on Thursday. At the opening of a U.N. Human Rights Council meeting on the issue, Navi Pillay said that all sides of the Middle East conflict were continuing to violate international law and voiced concern that transgressors are being left unpunished. "A culture of impunity continues to prevail in the occupied territories and in Israel," she told the 47-member body, calling for "impartial, independent, prompt and effective investigations into...