BBC News with Zoe Diamond

Pakistan's government says that it plans to review all diplomatic, military and intelligence cooperation with the United States and Nato after apparent air strikes on two Pakistani army checkpoints that killed 25 soldiers. Orla Guerin is in Islamabad.

For Nato, this could be a very costly mistake. Border crossings have already been closed to Nato convoys. Pakistan claimed two checkpoints were targeted in an unprovoked attack. A senior official said there was no militant activity in the area at the time and Nato had the grid references for the checkpoints. But Nato and Afghan sources have told the BBC that a special forces mission came under fire from inside Pakistan. Exactly what happened on the border is still in dispute. Nato has offered condolences and promised a thorough investigation.

Reports from Cairo say Arab League finance ministers have decided to recommend tough sanctions against the Syrian leadership over the violent suppression of anti-government protests. The final decision will be made by foreign ministers on Sunday, but a draft document seen by correspondents indicates the measures could include a freeze on government assets and a travel ban on Syrian officials seeking to visit other Arab countries.