SEASON PREMIERE: Because of what happened between seasons to former co-starring correspondent Mark Halperin, who resigned his jobs after admitting to past incidents of sexual harassment while at ABC News, The Circus begins this season with a new regular correspondent: Alex Wagner (pictured) from CBS News. And this opening installment includes a visit to Moscow, where editors at the state-controlled newspaper are interviewed about their opinion of the current U.S. administration and its policies. (But interviewed just before Friday’s missile strike on Syria.) Returning co-hosts John Heilemann and Mark McKinnon are back, as is this show’s fascinating behind-the-scenes, on-the-go approach.