Well, yes, if it was planned from the beginning. It could have been improvised. To summarize Percent_Carbon in a way that brings out the potential that the plan he explained was improvised... Step 1. Conquer Britain as Voldemort. Doesn't work as well as hoped, Britain is divided, not united. Step 2. Use power to try to set up a situation that you think you can exploit later. Wait years before you see a good way to exploit it Step 3. See the way Harry Potter came out, see an opportunity to conquer a united Britain, and go for it