Wyndham Lewis: Art and War (Imperial War Museum, 071-416 5000, to 11 Oct). The No 1 British artist of the first half of this century.
Ian Hamilton Finlay: Instruments of Revolution (City Gallery, Leeds, 0532 478248, to 12 Sept). Enlarged version of the recent ICA show. French Revolutionary themes predominate.
Manet and the Execution of Maximilian (National Gallery, 071-839 3526, to 27 Sept). Survey of Manet's treatment of politics and violence, centred on the three cool Executions.
Adrian Piper (Kettles Yard, Cambridge, 0223 352124, Sat to 6 Sept). Confrontational photo-text work by black American woman. Guaranteed to worry the white viewer.Reuse content