"Wars could start" only in that the people who could start wars by other channels happen to use Twitter. The president could make a bombastic statement in a TV

"Wars could start" only in that the people who could start wars by other channels happen to use Twitter. The president could make a bombastic statement in a TV interview just as easily. It's not like some random who managed to get a check mark is going to have any significant influence just because they are 'verified'.