The Prime Minister has been speaking about Afghanistan's future during a trip to Camp Bastion.
He said: "To secure it for the future we need the most capable Afghan government, we need the most capable Afghan security forces but we also need the political process.
"Those people who are prepared to give up the bomb and the bullet can be part of that political process as part of that future for Afghanistan that will be in all our interests".
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Rescue workers are at the site Sunday morning trying to cut open mangled coaches.
Despite chilly temperatures it will be a mostly dry day, and milder than yesterday.