I think that our own crisis of democracy is in its own way affecting our ability to leverage in the same way that we used to in the world.

For those of us who are fortunate to share an Irish ancestry, we take great pride in the contributions that Irish-Americans.

America has not led but fled on the issue of global warming.

Strong leadership demands more than the willingness to use force. It means directing the use of the right tools at the right time for the right purpose and the right cause.

I think the world is safer without Iran with a nuclear weapon. The world has got the potential to be safer if we fully implement the Paris agreement.

I think the United States is still the indispensable force for positive change and for rule of law and for order and structure.

I commanded a naval gunboat patrolling the Mekong Delta. Then when I came home after two tours of duty, I decided that the same sense of service demanded something more of me.