MARQUARDT: Welcome back. Security is being ramped up at U.S. embassy in the Balkan country of Montenegro after an attacker threw a hand grenade over the embassy compound wall. Officials are saying that the grenade appears to have just gone off as it was being thrown. The suspect was found dead 100 feet from the embassy wall. His identity and his motive are still unclear. No injuries and no damage have been reported at the embassy.</s>ROMANS: Another major blow to embattled Israeli Prime Minister Benjamin Netanyahu. A second close confidant of his now agreeing to testify in a corruption investigation swirling around him and his inner circle. CNN's Oren Liebermann is live in Jerusalem for us. How big of a development is this?</s>OREN LIEBERMANN, CNN CORRESPONDENT: Christine, since these investigations went public about a year and a half ago, this may very well be the biggest blow to Prime Minister Benjamin Netanyahu, who keeps a notoriously tight inner circle. And that's why this man, Schlomo Filber, agreeing to cooperate with prosecutors, could be such a big blow to the prime minister. He knows the inner workings of Netanyahu's inner circle as well as being potentially a key witness in one of five investigations facing the prime minister and his inner circle, potentially implicating the prime minister as well. We'll find out as the case continues. Meanwhile, Netanyahu himself speaking both last night and on his social media Facebook account this morning trying to portray an air of normalcy saying he will continue to lead Israel with judiciousness and saying that he expects to be back at a conference next year, implying there is absolutely nothing wrong here as these investigations get closer and closer.</s>ROMANS: All right. Oren Liebermann for us in Jerusalem. Thanks, Oren.</s>MARQUARDT: Well, President Trump is now suggesting arming teachers to stop school shootings. That idea had little support at a powerful CNN town hall on guns. Senator Marco Rubio was the only Republican on hand. He heard from emotional students still trying to come to grips with their new reality.
Second Netanyahu Confident to Testify Against Him