Are US-Iran ceasefire talks in Pakistan doomed to fail?

On Saturday, Iranian and American negotiators will sit down in Islamabad for the first direct talks since the war began on February 28. The meeting, brokered by Pakistan, is the first test of whether the April 7 ceasefire can be converted into something more durable. The obstacles are formidable. Both the U.S. and Iran have declared victory and insisted that talks will begin on their terms. Meanwhile, Israel has kept up its bombing campaign in Lebanon.Add Pakistan into the mix as a mediator, and...