Barack Obama: “All agencies maintain vigilance to ensure we are best postured to defend the homeland and prevent attacks by individuals…”

And I will fight for that, even if I don’t always think it’s going to win.

A drift towards extremism was "not inevitable

I’m going to insist that we can do better than we’re doing right now.

I think when we act on that basis, it doesn't always work out, but over time things do get better.