today under the Four Geneva Conventions of 1949, executing persons
detained as a result of armed conflict without a fair trial before a regularly
constituted court constitutes a grave war crime. To be sure, under the First
Amendment to the United States Constitution Harvard Law Professor Vagts has the
freedom to advocate war crimes so long as he does not participate in their
commission, or incite them, or aid and abet them. But precisely where is that line
to be drawn for law professors?  - Professor Francis BoyleÂ