Sen. John McCain leaving a meeting of GOP senators in the U.S. Capitol, June 22, 2017. (Chip Somodevilla/Getty Images)WASHINGTON (JTA) — Sen. John McCain, R-Ariz. — war hero, presidential candidate, force of nature — has brain cancer, his family said Wednesday night, and he is garnering well-wishes from across the spectrum.More than a few are from Jews: Israeli Prime Minister Benjamin Netanyahu called McCain “A hero. A fighter. A friend.” Godspeed, @SenJohnMcCain. A hero. A fighter. A friend.