The Board also recommended that the U.N. further investigate violations of international humanitarian law by those on both sides of the conflict: Israeli forces, Hamas, and other Palestinian militants.[1][14] In April 2011, WikiLeaks released documents indicating that United States Ambassador to the United Nations Susan Rice contacted Ban on 4 May 2009 and successfully pressured him into rejecting Martin's recommendation for the far-reaching investigation.[10][14][15] The United Nations Human Rights Council had by then redefined the scope of the investigation it had mandated and established the United Nations Fact Finding Mission on the Gaza Conflict headed by Richard Goldstone.[10]