The Rwanda-backed rebels who captured key areas of Congo’s mineral-rich east say they have withdrawn from planned peace talks with the country’s government in Angola. A spokesman for the M23 rebel group said the talks scheduled to start in the Angolan capital, Luanda, on Tuesday “have become impracticable” as a result of the sanctions announced by the European Union against some of its members on Monday. Congo’s government had said it will participate in the peace talks.