erratically, emotionally, and politically. often dlifd by means of early morning tweet. with little regard for strategy and no preparation for long-term consequences. >> for buttigieg a former naval intelligence officer it's a way to differentiate himself from much and to mark a generational shift for his party. >> i should act knowledge for the better part of my lifetime, it has been difficult to identify a consistent foreign policy in the democratic party either. >> reporter: the speech, laying down a marker, the primary of 23 candidates. >> thank you. >> buttigieg's service and age of just 37-years-old also serves as a direct contrast to trump, himself. who didn't serve and received a deferment from the vietnam on account of bone spurs. it's something buttigieg has brought up with increasing frequency on the campaign trail. >> i don't have a problem standing up to somebody who was