Germany knows a thing or two about boycotting Jews and where that leads, making its principled stand against banning Israel from this year's Eurovision contest especially significant.Ahead of an expected Thursday decision by the European Broadcasting Union on whether Israel should be allowed to participate in the song contest – one it has been a part of since 1973 – Reuters reported that Berlin made it clear: if Israel is barred, Germany will stay away.Moreover, and perhaps even more noteworthy,