An Assyrian boy holds a poster during a sit-in for abducted Christians in Syria and Iraq, at a church in Sabtiyesh area east Beirut, Lebanon, Thursday, Feb. 26, 2015. Islamic State militants snatched more hostages from homes in northeastern Syria over the past three days, bringing the total number of Christians abducted to over 220 in the one the largest hostage-takings by the extremist group, activists said Thursday. (AP Photo/Hussein Malla)

“Daesh is wiping Assyrian heritage in Mosul, and at the same time wiping them geographically from the face of the Earth,” said Osama Edward, director of the Assyrian Network for Human Rights in Syria. He referred to the Islamic State by its Arabic acronym.

FILE - This Jan. 10, 2015 booking file photo provided by the Seminole County Public Affairs shows George Zimmerman. The U.S. Justice Department said Tuesday, Feb. 24, 2015, that the former neighborhood watch volunteer will not face federal charges in the shooting death of unarmed 17-year-old Trayvon Martin. Zimmerman was acquitted in 2013 of second-degree murder. (AP Photo/Seminole County Public Affairs, File)

“Our decision not to pursue federal charges does not condone the shooting that resulted in the death of Trayvon Martin and is based solely on the high legal standard applicable to these cases,” Vanita Gupta, the Justice Department’s top civil rights lawyer, said in a statement announcing the decision.

FILE - This April 4, 2012 file photo shows NBC News' Brian Williams, at the premiere of the HBO original series "Girls," in New York. Williams is currently under suspension as "Nightly News" anchor and managing editor for six months without pay for misleading the public about his experiences covering the Iraq War. Bill O'Reilly, Fox News Channel's prime-time star, is accused of claiming he had reported in a combat zone for CBS News during the 1982 Falklands War when he was more than a thousand miles from the front. (AP Photo/Starpix, Dave Allocca, File)

NBC News suspended Williams for incorrectly saying he rode in a helicopter hit by an enemy grenade while reporting in Iraq in 2003. O’Reilly, Fox News Channel’s prime-time star, is accused of claiming he had reported in a combat zone for CBS News during the 1982 Falklands War when he was more than a thousand miles from the front.

The Senate Democratic Caucus, led by Senate Minority Leader Harry Reid of Nev., center, gestures during a news conference on Capitol Hill, Tuesday, Feb. 24, 2015, to urge Republicans to support a "clean bill" to fund the Homeland Security Department as that agency's budget expires later this week. The DHS budget is at a standstill over provisions attached to a Homeland Security spending bill aimed at blocking President Barack Obama's executive actions on immigration.  Sen. Bob Menendez, D-N.J. is at left. (AP Photo/J. Scott Applewhite)

“We could have that vote very quickly,” Majority Leader Mitch McConnell, R-Ky., said as his party struggled to escape a political predicament of their own making involving an agency with major anti-terrorism responsibilities.

FILE - In this Feb. 13, 2015 file photo, House Speaker John Boehner of Ohio signs the bill authorizing expansion of the Keystone XL pipeline, on Capitol Hill in Washington. Boehner says Congress is sending President Barack Obama legislation to build the Keystone XL pipeline on Tuesday. The White House is indicating Obama will quickly veto it in private over Republican lawmakers' urging that he sign it. It would be the third veto of Obama's presidency. From left are, House Majority Whip Steve Scalise of La., Senate Majority Leader Mitch McConnell of Ky., Sen. John Hoeven, R-N.D., Senate sponsor of the Keystone XL pipeline bill, Boehner, House Majority Leader Kevin McCarthy of Calif., Rep. Kristi Noem, R-S.D., Rep. Kevin Cramer, R-N.D., and House Energy and Commerce Committee Chairman Rep. Fred Upton, R-Mich. (AP Photo/J. Scott Applewhite, File)

“The presidential power to veto legislation is one I take seriously,” Obama said in a brief notice delivered to the Senate. “But I also take seriously my responsibility to the American people.”

A doctor's assistant prepares a measles vaccination in Berlin, Germany, Tuesday, Feb. 24, 2015. An 18-month-old boy has died of measles amid an outbreak of the disease in Berlin, a hospital in the German capital said Tuesday. An autopsy on the child, who wasn't inoculated against measles, showed that he had an unspecified other disease as well but that wouldn't have led to his death without the measles infection, the Charite hospital said. (AP Photo/dpa, Lukas Schulze)

“There’s a misconception that measles does not kill in developed countries, but it unfortunately still happens,” said Dr. David Elliman, an immunization expert at Britain’s Royal College of Paediatrics and Child Health, citing similar deaths in the U.K. in recent years, mostly among people with other health problems, like asthma.

A woman holds a picture of Ukrainian pilot Nadezhda Savchenko during a rally outside the Russian Embassy in Kiev, Ukraine, Tuesday, Feb. 24, 2015. Ukrainian pilot Nadezhda Savchenko was captured by Russia-backed rebels during fighting in eastern Ukraine. The Kiev government has so far been unsuccessful in seeking the extradition of Savchenko who was elected a member of the Ukrainian parliament in the October 2014 Ukrainian parliamentary election. (AP Photo/Sergei Chuzavkov)

Ukrainian Foreign Minister Pavlo Klimkin told reporters that rebel shelling of Ukrainian positions had to stop before Ukraine started withdrawing its artillery. “You can’t pull out … while shelling is coming down on you,” he said.