According to Israel's Channel 2 news, George Mitchell accused Bashir Assad of transferring weapons in convoys to Hezbollah. When Assad denied it, Mitchell showed him satellite photos - and Assad still denied it.
Finally, after a number of such iterations, during which Mitchell informed Assad that he had seen incontrovertible proof, Assad asked Mitchell, "And if we are transferring - so what?"
A senior US official is quoted as saying that Assad is a liar and that it is impossible to reach an agreement with him.
But, meanwhile, Syrian weapons still pour into Lebanon.