JERUSALEM, ISRAEL - NOVEMBER 18: People watch as Israeli emergency personnel clean the site outside a synagogue on November 18, 2014 in Jerusalem, Israel. Four Israelis have been killed and several others wounded in a terror attack this morning in a synagogue in the western Jerusalem neighborhood of Har Nof. Two Palestinian assailants were killed at the scene by police.  (Photo by Ilia Yefimovich/Getty Images)