[cromwellian]

Seems that the technique would also work on Europa to melt its way into the ocean underneath the ice.

[panzi]

But if there really is live down there, how do you then explain to them that you just dropped some nuclear waste into their ocean?

[rational-future]

"We have reasons to believe you posses weapons of mass destruction"

Worked fine with all the depleted uranium dropped on Iraq.

[TeMPOraL]

Europeans (pun intended) could be much better equipped to retaliate than Iraqis.

[Crito]

It has definitely been suggested: http://en.wikipedia.org/wiki/Cryobot http://www.jpl.nasa.gov/releases/2002/release_2002_6.html