Not yet (to my knowledge.)

Maybe someday, if we manage to raise the sanity waterline enough, and if everyone who tries it doesn't get denounced as giving aid an comfort to the Enemy for even considering the idea.

EDIT: Possible example:

You should never, ever murder an innocent person who's helped you, even if it's the right thing to do; because it's far more likely that you've made a mistake, than that murdering an innocent person who helped you is the right thing to do.

Sound reasonable?

During World War II, it became necessary to destroy Germany's supply of deuterium, a neutron moderator, in order to block their attempts to achieve a fission chain reaction. Their supply of deuterium was coming at this point from a captured facility in Norway. A shipment of heavy water was on board a Norwegian ferry ship, the SF Hydro. Knut Haukelid and three others had slipped on board the ferry in order to sabotage it, when the saboteurs were discovered by the ferry watchman. Haukelid told him that they were escaping the Gestapo, and the watchman immediately agreed to overlook their presence. Haukelid "considered warning their benefactor but decided that might endanger the mission and only thanked him and shook his hand." (Richard Rhodes, The Making of the Atomic Bomb.) So the civilian ferry Hydro sank in the deepest part of the lake, with eighteen dead and twenty-nine survivors. Some of the Norwegian rescuers felt that the German soldiers present should be left to drown, but this attitude did not prevail, and four Germans were rescued. And that was, effectively, the end of the Nazi atomic weapons program.

-Ethical Injuctions