Nato's top commander in Afghanistan has said increased troop levels could bring a negotiated peace with the Taliban.
US Gen Stanley McChrystal told the UK's Financial Times newspaper that there had been "enough fighting".
He said a political solution in all conflicts was "inevitable". His remarks came as the top UN envoy in Kabul said it was time to talk to the militants.
Afghan and Pakistani leaders are in Turkey to discuss tackling the Taliban-led insurgency in their countries.
This is the fourth such meeting initiated by Turkey, which has offered to broker talks between the Afghan government and the Taliban.
Both Afghan President Hamid Karzai and his Pakistani counterpart, Asif Ali Zardari, will attend an international conference on Afghanistan in London on Thursday.
'Focus on the future'
"I'd like everybody to walk out of London with a renewed commitment, and tha
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