The libertarian movement has always been a contentious arena: that’s the nature of the beast. After all, we’re talking about libertarians – individualists to a fault: getting them to agree on anything is often like trying to herd cats. Aside from this question of temperament, however, there have been some very substantial ideological differences over the years, and – not surprisingly – many of these internal conflicts have been over US foreign policy.

That’s because it’s relatively easy to ascertain the libertarian position on matters domestic: government spying on our emails? We’re against it. Higher taxes? We’re against all taxes, period. The National Endowment for the Arts? Abolish it.