He then fled to West Germany, where he collaborated with fellow artist Sigmar Polke.

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The new leader, Sigmar Gabriel, the SPD's seventh chairman in 11 years, looks an unlikely healer.

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Can a London dealer sell a Sigmar Polke at the Basel art fair without paying the royalty?

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So its chairman, Sigmar Gabriel, had designed an elaborate theatre to keep the candidacy open until January.

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Sigmar Gabriel, the Social Democratic environment minister, insists that energy conservation and renewables can make up for the loss of nuclear power.

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There will also be exhibitions across the Tate dedicated to the work of abstract artist Kazimir Malevich, Germany's Sigmar Polke and a survey of British Folk Art.

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However, during the debate ahead of Friday's vote in the Bundestag, senior German Social Democrat Sigmar Gabriel accused Mrs Merkel of hurting the relationship between the two countries.

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The show, assembled by the curators Mark Rosenthal and Marla Prather, combines forty-five works by Warhol with more than one hundred by sixty other artists, including Gerhard Richter, Sigmar Polke, Cindy Sherman, and Jeff Koons.

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The chairman of Germany's Social Democrat party Sigmar Gabriel called his socialist counterpart in Paris a "victim of slander" by the ruling coalition and by Merkel personally in a recent interview with German daily Die Welt.

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