WHITFIELD: Breaking news out of Switzerland. A diplomatic source tells CNN Swiss police have arrested two suspected terrorists, finding traces of explosives in a car. The city of Geneva remains on high alert after a tip from U.S. intelligence that terrorists were planning a possible attack in the city come this new revelation. CNN's international diplomatic editor, Nic Robertson joining me now from Geneva with the very latest. So Nic -- what are you hearing about these arrests and this vehicle?</s>NICK ROBERTSON, CNN INTERNATIONAL DIPLOMATIC EDITOR: Well, Swiss authorities have now said that the two men were arrested, two men of Syrian origin, they're saying that there were traces of explosives in the vehicle. What these men are being charged with now or being investigated with, an investigation has been opened by the federal authorities, is the manufacturer concealment and transportation of either explosives or a toxic gas. Now, it's not quite clear what this means at the moment. We know that traces of explosives were found here or detected. They're talking here about the manufacturer possibly, the transportation possibly, the concealing of explosives or toxic gases. But it's not clear at this phase what that we're talking here about explosives that are fully made or just the sort of chemicals that you would put together to make explosives. That's where the investigation is. These two men of Syrian origin are also being investigated with possible ties to a terrorist organization. That's what Swiss officials are saying. There is a high state of security alert here right now. And in the Swiss ministry of justice building behind me here, a briefing by officials is about to get under way. We may get more details there.</s>WHITFIELD: All right, Nic Robertson, thank you so much in Geneva. We'll check back with you. All right. Meantime, straight ahead, it appears President Barack Obama is done waiting on Congress. What steps the White House is taking to expand gun background checks without congressional approval.
Two Suspected Terrorists Arrested in Switzerland