Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
Two New York City cops assassinated over the weekend - what will be the department's reaction?
The U.S. has bolstered security at the American embassy in Baghdad, adding between 50 and 100 marines and Army personnel, according to a U.S. official.
The Sstate Department strongly warns against all but essential travel to the country, adding that U.S. citizens in Iraq "remain at high risk for kidnapping and terrorist violence."
CNN international correspondent Nic Robertson reports.