Modern art takes the high road, the desert Dalís cringe before Paris, and Barack Obama's portraitist puts black fishermen centre stage – all in your weekly dispatch
Charles II: Art and Power
The Restoration in 1660 saw a rapid return of royal finery after the republican rule of Oliver Cromwell. Even the crown jewels needed remaking. Yet far from a frozen mask of reimposed regal authority, the new king, who had picked up some dissipated ways in his years of exile, created a libertine court. The sensualist royal painter Peter Lely captured all the decadent opulence perfectly.
• Queen's Gallery, London, 8 December to 13 May.