Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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Near Suruc, Turkey (CNN) - Could ISIS fighters be training as warplane pilots capable of turning their weapons on coalition aircraft?
That's the worrying prospect suggested by an unverified report from the London-based Syrian Observatory for Human Rights that ISIS has three warplanes in its possession in northern Syria.
The Syrian opposition group also claims, citing reliable sources in Syria, that former Iraqi military officers are training members of the Sunni extremist militant group to fly them.
London (CNN) - Four men were arrested Tuesday in London on suspicion of involvement in a terrorist plot, the city's Metropolitan Police said.
Police didn't release details about what the four were alleged to be plotting or where the attacks were to happen, but said the arrests were part of "an ongoing investigation into Islamist related terrorism."
The arrests come nearly two weeks after police arrested at least 10 other men in the United Kingdom on suspicion of terror offenses, including supporting a banned organization and encouraging terrorism.
U.S. Secret Service Director Julia Pierson called an incident in which a man scaled a fence and entered the White House "unacceptable" and told a congressional committee Tuesday that she takes "full responsibility."
Omar Gonzalez, a 42-year-old knife-wielding Iraq war veteran, entered an unlocked door to the executive mansion, Pierson told the House Committee on Oversight and Government Reform, which grilled her on the September 19 security breach.
Faysh Khabur, Iraq (CNN) - An Iraqi helicopter being used to bring aid to trapped Yazidis on Mount Sinjar crashed Tuesday, state-run Iraqiya TV reported.
The military cited "technical failure" in the crash of the MI-17.
The office of the Kurdish regional government's prime minister said the pilot died.
The survivors were evacuated by the Kurdistan Regional Government, al-Iraqiya reported. Among them was Vian Dakhil, the only Yazidi in parliament.
Donetsk, Ukraine (CNN) - A leader of pro-Russian rebels in eastern Ukraine resigned his post Thursday as fighting flared there, with militants reportedly downing a Ukrainian military plane as Ukrainian government forces continued their attempt to retake the key city of Donetsk.
Alexander Borodai, prime minister of the self-proclaimed Donetsk People's Republic, told reporters in the city he was stepping down Thursday and handing power to Alexander Zakharchenko, a little-known militia commander.