FROM CNN's Jack Cafferty: With diplomatic tensions rising, both the U.S. and Israel are trying to tamp down the flames. Secretary of State Hillary Clinton now insists the two allies enjoy a "close, unshakable bond." [cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2010/images/03/17/art.jerusalem.jpg caption="Palestinian laborers work on a construction site in east Jerusalem. VP Biden has criticized Israel's decision to approve … Continue reading Time for the U.S. to get tougher with Israel?