I guarantee that the entire world will unite at the first moment of an alien attack. The true cosmopolitanism of Stoic philosophy will manifest on that day, and after our victory, there will be no more boundaries or wars.
Iin 10 years the world will be run by millions of AI bureaucrats who will make decisions that we can't understand about jobs, finance and government, leading to power shifting from humanity to alien intelligences.
~ Yuval Noah Harari