If you, like me, are confused about the whole Palestine/Israel conflict, here is a video explaining the history. After thousands of Jews immigrated to the Palestine territory in the 1920s and 30s (and more in the 1940s who escaped persecution by Nazis), the state of Israel was proclaimed in 1948 by the League of Nations and the United States endorsed the partition. British troops left Palestine at this time (it was previously under British mandate). Palestine was left to try and form a Palestinian state on the West Bank and Gaza. You can read more about the history with timeline here.