This crisis deepened, when Israel's Rabbinate called into question the validity of soldiers who had undergone conversion in the army, meaning a soldier killed in action could not be buried according to Jewish law.[47] In 2010, the rabbinate created a further distrust in the conversion process when it began refusing to recognize orthodox converts from the United States as Jewish.[48] Indeed, the great-niece of the renowned Zionist Nahum Sokolow was recently deemed "not Jewish enough" to marry in Israel, after she failed to prove the purity of Jewish blood for four generations.[49]