David Denby: “The Iron Lady,” “War Horse,” “Mission: Impossible: Ghost Protocol” reviews.
As Margaret Thatcher in old age— confined to her home and afflicted with dementia—Meryl Streep turns senescence into poetry. Apart from the great Lear interpreters, Streep, in “The Iron Lady,” has given us the best impression we’ve had of a potentate suffering from . . . (Subscription required.)