The U.S. campaign in Yemen has used conventional weaponry on occasion: sorties by Harriers and even some cruise-missile strikes.
The cruise-missile attacks were aimed largely at degrading Libya's antiaircraft defenses, which were considerable.
A military missile equipped with an onboard computer that allows it to guide itself on a preprogrammed course over long distances by sensing the terrain and comparing it to maps stored in its memory. (See smart weapons.)
Note: Cruise missiles first came into public awareness during the Persian Gulf War.