The Obama administration is considering what sort of military action to take, if any, against the government of Syrian President Bashar al Assad, which stands accused of using chemical weapons against its own people. The most likely option: a cruise missile strike against assorted military and government sites, like the presidential palace and chemical munitions facilities. Here's a primer on cruise missiles.
What are cruise missiles?
Cruise missiles are fast-moving, guided bombs that soar at a very low trajectory, parallel to the ground. They are distinct from regular (non-cruise) missiles primarily because they go really far.