See the part in bold? It directly contradicts the concept of "overthrow". It in fact would imply "defend against and invading force". We're talking about overthrowing. Talking about "Repelling an invading force" in the context of "overthrowing a tyrannical government" is, quite obviously, asinine.History is littered with empires that ran up against inferior forces and just couldn't handle themselves, mostly due to supply lines being easily disrupted and lack of knowledge of the terrain and the locals.