There is a hunger for the United States to be present again.

Well, human security is a concept that I am very committed to enshrining in American foreign policy.

There is absolutely no disconnect between common sense gun safety measures and protecting the Second Amendment rights of gun owners.

It is time to pick a side.Either we stand with the gun lobby or we join the president and stand up to them.

In the days ahead, I will propose more ways for more Americans to get involved in national service and give back to our communities, because every one of us has a role to play in building the future we want.

One thing we know for sure is that change is certain, progress is not.

Remember that movie Independence Day, where invaders were coming from outer space and the whole world was united against the invasion? Why can't we be united on behalf of our planet? And that's what I want to do.