In an interview with ITV News, General Sir David Richards defended the British Army's record in Afghanistan.
"What our soldiers and those who sacrificed their lives and their families can be reassured by is that our actions since 2001 have ensured that no terrorist atrocity has been planned or executed from Afghan soil," he said.
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A four-year-old boy is among 20 people to have died in some of the worst flooding West Virginia has seen.
The heavy showers will ease off this weekend.