With his weaponised dialogue and hypnotic macho characters, no writer has so relentlessly confronted the explosive issues of our times. But theatre and Hollywood are changing. As he hits 70, we ask: is David Mamet losing his magic?David Mamet arrives at his 70th birthday this week, and there couldn't be a better moment for his classic Glengarry Glen Ross to be storming London's West End once again: that gripping spec…
