An exchange of strong words over the issue of settlements in Jerusalem has exposed the serious strategic rift between the American and Israeli governments.
Stephen Sackur talks to George Birnbaum, an American political consultant who has been a close adviser to Israel's current Prime Minister and Foreign Minister.
Barack Obama and Binyamin Netanyahu seem destined for a prolonged battle of wills. Who will win?
You can watch the full interview on Monday 12th April 2010 on BBC World News at 03:30, 08:30, 15:30, 19:30 GMT.
And on the BBC News Channel at 04:30.