CLARISSA WARD, CNN SENIOR INTERNATIONAL CORRESPONDENT: So they might know something, that they have just been instructed to try to find some AK-47s or just been instructed to find a safe house for a brother who is visiting from Syria. They don't necessarily have the full picture. They don't necessarily know the full scope and that makes it very difficult for security services when they're trying to drill down on these networks when they're trying to prosecute people for their involvement with these networks to gather the evidence to prove you actually were categorically involved with this attack and you knew what this attack was going to look like. The other thing we're seeing, the more we look into this is that European security services are just stretched so thin. An estimated 10,000 Europeans in Iraq to fight, many of then with ISIS, a lot of them are now coming back to Europe. And on top of that, you have this new threat to contend with, which are ISIS-inspired attacks. All of it putting a very bleak picture together for European security service.</s>KATE BOLDUAN, CNN ANCHOR: Bleak to say the very least. But important to get the reporting out. Clarissa, great to hear from you. Thank you. Coming up, Donald Trump praising Russian President Vladimir Putin again and again. Coming up, CNN's Manu Raju asked Republicans on Capitol Hill if they agree with the man at the top of the ticket.</s>SEN. BOB CORKER, (R), TENNESSEE: One has to be careful to let flattery influence how you feel about someone.
Up to 40 ISIS Paris Suspects At Large as ISIS Ratchets Up Terror Plots