GENEVA (Reuters) - The United Nations agreed on Friday to establish a group of eminent experts to examine all human rights violations commmitted in Yemen s war and to identify those responsible. In a last-minute compromise hammered out between Western powers and Arab countries, the U.N. Human Rights Council adopted by consensus without a vote a resolution which the Yemen delegation said it accepted.  A credible international investigation is necessary in order to comprehensively, transparently, independently and impartially establish facts and circumstances surrounding violations with a view to put an end to the cycle of impunity in Yemen,  the Dutch delegate told the forum on behalf of a core group of Western states. (This version of the story corrects second paragraph to say adopted without a vote, not with a vote). 