BAGHDAD, March 17 (Reuters) - Rockets and at least five drones were launched at the U.S. embassy in Baghdad early on Tuesday from areas around the city, Iraqi security sources said, describing the attack as the most intense since the start of the U.S.-Israel war with Iran.A Reuters witness saw at least three drones heading in the direction of the embassy. The C-RAM air defence system shot down two of them while a third struck inside the embassy compound, from which fire and smoke could be seen r...