Black and white cartoon of Bashar al-Assad
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Pen v Sword: Syrian cartoonist Ali Ferzat on challenging the Assad regime

13 September 2013 Last updated at 00:13 BST

Provocative artworks by a Syrian political cartoonist have gone on display in London.

Without Words, an exhibition organised by the Mosaic charity, features the work of Ali Ferzat.

He is living in exile, after being tortured by the Syrian regime, but continues to challenge it through his work.

Syria correspondent Lina Sinjab met him in London.