There are already stealth cruise missiles in inventory.
The Tomahawk cruise missile is a "low observable" design with a radar cross section of 0.05 square meters.
The AGM-129A cruise missile is a stealth missilie with a radar cross section smaller than that of a sparrow (bird), which has an RCS of 0.01 square
meters.
So is the JASSM...
Also France is working on one as is Russia in a joint project with India.
I'm sure there are others.
As far as putting RAM (radar absorbent material) on the skin of a missile, I would think it's possible.
Something else to consider is hypersonic missiles; will the plasma that builds up around such a missile reduce it's radar cross section sufficiently
to make it all but invisible to radar?
(plasma is known to reduce the RCS on objects, and plasma naturally builds up around the leading edges of hypersonic vehicles.)
Natalie
PS: damn! kinglizard beat me to it! oh well....
[Edited on 8-3-2004 by intelgurl]