With prescient timing, London’s Mosaic Rooms present ‘Mouths at the Invisible Event’, the first solo exhibition by artist David Birkin. His work focuses on the censorship and spectatorship that surround the War on Terror. Birkin’s interest lies in the official manipulation of language, as well as how truth can become ambiguity. This thought-provoking exhibition includes films taken from drones, as well as photography from an incredible skywriting performance Birkin undertook on Memorial Day last year, writing above New York City words taken from a CIA letter: EXISTENCE OR NONEXISTENCE. On Veterans Day, he commissioned a plane to circle the Statue of Liberty with the message A SHADOW OF A DOUBT (pictured). Proof at least that serious research can be translated into fascinating art.