"Pilots and other experts say this type of bomb "can be aimed through a window"." - Haaretz These bombs cannot be aimed thru a window because they are not laser guided. (But don't tell it to the Saudis, they might be buying a pig in a poke.) To be very accurate the bomb needs to communicate with a satellite during its fall to correct its trajectory. I imagine that if such bombs falls into the wrong hands, say when the regime is overthrown, the US will be able to disallow its satellites to transmit the information.
U.S. Republican John Kasich says he is suspending his presidential campaign (Reuters)
from the article: Gates says Washington to sell smart bombs to Saudi Arabia