We were very effective, and I was very effective, in shaping public opinion around my campaigns. But there were big stretches, while governing, where even though we were doing the right thing, we weren't able to mobilize public opinion firmly enough behind us to weaken the resolve of the Republicans to stop opposing us or to cooperate with us. And there were times during my presidency where I lost the PR battle.

Our objective is clear: we will degrade, and ultimately destroy, ISIL through a comprehensive and sustained counter-terrorism strategy.

I've said to [Donald Trump], and I think others have said to him that the day that he is the President of the United States, there are world capitals and financial markets and people all around the world who take really seriously what he says, and in a way that's just not true before you're actually sworn in as president.

I will never turn Medicare into a voucher. No American should ever have to spend their golden years at the mercy of insurance companies. They should retire with the care and dignity they have earned.

I want to reduce America's deficit by cutting spending that we don't need but also by asking the wealthy to do a little bit more so that we can invest in things like research and technology that are the key to a 21st century economy.

My liberty depends on you being free, too.

The more we can encourage entrepreneurship, particularly for young people, the more they have hope. That requires some reforms in these [African] governments: rooting out corruption, increased transparency and how government operates, making sure that regulations are not designed just to advantage elites, but are allowing people who have a good idea to get out there and get things done.