The challenge China faces as it attempts to regain control of its western-most Muslim region was underlined this morning when hundreds of angry Uighurs clashed yet again with riot police.

• 今天早晨数百名维吾尔人又一次与防暴警察爆发了冲突，中国试图重新取得穆斯林占多数的西部地区的控制的挑战被凸显出来。