The president [Barack Obama] is not willing to send in apaches and spotters if the Iraqis say they don't want them and if it means that these Shia mobilization forces are going to be going after and trying to kill Americans.

There are perfectly appropriate circumstances to unmask the names of people. In fact, that is done quite often. And the standard is whether the unmasking of those names is necessary to determine the significance of the intelligence.

When Donald Trump focuses on a fight with the press or investigating leaks but doesn't seem committed to standing up to what Russia is doing at home and around the world, that is of profound concern.

America has a critical role to play as the most powerful member of the world community.

We need Democrats and Republicans in Congress to work together to fashion a very comprehensive pushback to Russia, not just the cyber-hacking, but their bribery of officials in Europe, their social media campaign, their overt media campaign.

I'm concerned the clock is ticking, and the danger to the American people is still very present.

It's a huge gap in security, it's a huge problem we've had with our immigration system for many years.