Over at Bookcrossing, the republic debate has been ignited on one of their forums. One member states that they've got a "few questions" they'd like to ask republicans. Well, since they asked, we'll answer:
Is there any genetic reason why a republic would be immune to a Mugabe or a Misolevic?
No, but neither is there any guarantee that dictatorship can be prevented under a constitutional monarchy (Thailand is a recent example). It's a little known fact that in countries where the Queen is (or was) head of State, there have been a number of coups. Grenada, Sierra Leone, Pakistan, Fiji and the Solomon Islands have all suffered coups while having the British Monarch as their head of State.