Theatre review: God of Carnage / Gielgud Theatre, London
Gielgud Theatre, LondonThe first night of Yasmina Reza's new play was disrupted by a power failure. At one point Cameron Mackintosh, the theatre owner, appeared to explain: "I haven't short-changed the meter."But, after a 10 minute hiatus, the show went on with the aid of a working stage light and a front-of-house spot. And, even if dramatic momentum was briefly lost, it couldn't disguise Reza's brutally co…