“I hate war as only a soldier who has lived it can,” said President Dwight D. Eisenhower, “only as one who has seen its brutality, its futility, its stupidity.” This exhibition presents 140 works by 39 artists who have either experienced war in the past or are witnessing conflict in the present. According to Carolyn Christov-Bakargiev, the director at Castello di Rivoli, the show looks at how artists, who are particularly sensitive to social dynamics, have processed war’s “horror and inexplicability, suspended as it is between rational calculations, on the one hand, and utter unpredictability on the other.” Images of Kiev and Bucha, of Afghanistan and even 19th-century wars, populate this timely exhibition. —Elena Clavarino