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First lady Michelle Obama hugs Jeff Bezos, the founder and CEO of Amazon.com during an event in the State Dining Room of the White House in Washington...

Israeli Soldiers stand guard during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust memorial, in Jerusalem, Thursd...

Israeli president Reuven Rivlin lays a wreath during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust memorial, in...

Israeli President Reuven Rivlin lays a wreath during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust memorial, in...

Israeli Prime Minister Benjamin Netanyahu adjusts his glasses during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocau...

Israeli Prime Minister Benjamin Netanyahu stands during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust memorial,...

Israeli Prime Minister Benjamin Netanyahu, left, and Israeli President Reuven Rivlin, second left, chat during a ceremony marking the annual Holocaust...

A horse is ridden to the track for a workout at Churchill Downs Thursday, May 5, 2016, in Louisville, Ky. The 142nd running of the Kentucky Derby is s...

First lady Michelle Obama speaks in the State Dining Room of the White House in Washington, Thursday, May 5, 2016, during an event to announcing commi...

First lady Michelle Obama speaks in the State Dining Room of the White House in Washington, Thursday, May 5, 2016, during an event to announcing commi...

First lady Michelle Obama hugs Kathleen Carroll, global talent acquisition leader at Amazon, in the State Dining Room of the White House in Washington...

A Russian honor guard stand at the coffin of killed in Syria Russian serviceman Alexander Prokhorenko, at a mourning ceremony in Chkalovsky military a...

Residents of a building in an overlooking slum observe efforts by rescuers to free a woman who was trapped for six days in the rubble of a collapsed b...

Israeli Prime Minister Benjamin Netanyahu lays a wreath during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust mem...

Israeli Prime Minister Benjamin Netanyahu lays a wreath during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust mem...

Israeli Prime Minister Benjamin Netanyahu prepares to lay a wreath during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Ho...

Israeli Soldiers stand guard during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust memorial, in Jerusalem, Thursd...

Israeli Prime Minister Benjamin Netanyahu, center, Israeli President Reuven Rivlin, right, Chairman of the Yad Vashem Avner Shalev stand during a sire...

Holocaust survivor Joseph Gringlas, left, is assisted by Sen. Ben Cardin, D-Md., in lighting a candle as the U.S. Holocaust Memorial Museum holds its...

Britain's Queen Elizabeth II, right, talks with Japan's Prime Minister Shinzo Abe, left and his wife Akie, during his visit to Buckingham Palace in Lo...

A Russian honor guard march by a plane carrying the coffin of killed in Syria Russian serviceman Alexander Prokhorenko, at a mourning ceremony in Chka...

Holocaust survivor Kurt Gutfreund, left, is assisted by Sen. Ben Cardin, D-Md., center, in lighting a candle as the U.S. Holocaust Memorial Museum hol...

Jill Biden gets a kiss from Jeff Bezos, the founder and CEO of Amazon.com, in the State Dining Room of the White House in Washington, Thursday, May 5,...

First lady Michelle Obama speaks as Jeff Bezos, right, the founder and CEO of Amazon.com, listens, during an event in the State Dining Room of the Whi...

Pope Francis leads a prayer vigil, in St. Peter's Basilica, at the Vatican, Thursday, May 5, 2016. (AP Photo/Andrew Medichini)

A police officer wears a mask while controlling a roadblock near a wildfire in Fort McMurray, Alberta, Canada on Thursday, May 5, 2016. Raging wildfi...

American reality-show star Kim Kardashian holds her daughter North West as she rides in a classic American car with her husband, rap singer Kanye West...

This undated photo provided by the Washtenaw County Sheriff's office shows Kyle Bessemer. Bessemer, suspected of spraying a contaminant on unpackaged...

Kyle Andrew Bessemer, stands in court during his arraignment, Thursday, May 5, 2016 in Ann Arbor, Mich. Bessemer, a Michigan man suspected of spraying...

Kyle Andrew Bessemer, stands in court during his arraignment, Thursday, May 5, 2016 in Ann Arbor, Mich. Bessemer, a Michigan man suspected of spraying...

Republican presidential candidate Donald Trump gestures during a rally in Charleston, W.Va., Thursday, May 5, 2016. (AP Photo/Steve Helber)

Rome, presentation of the new Alfa Romeo Giulia. Pictured: Matteo Renzi, Sergio Marchionne//IPAPRESSITALY_181718

Rome, presentation of the new Alfa Romeo Giulia. Pictured: Matteo Renzi, Sergio Marchionne//IPAPRESSITALY_181719

Rome, presentation of the new Alfa Romeo Giulia. Pictured: Matteo Renzi//IPAPRESSITALY_181714

Rome, presentation of the new Alfa Romeo Giulia. Pictured: Matteo Renzi, Sergio Marchionne//IPAPRESSITALY_181712

People protest in front of the European Council to show solidarity with the people of Aleppo in Syria still hit by air strikes. They gather at the Sch...

People protest in front of the European Council to show solidarity with the people of Aleppo in Syria still hit by air strikes. They gather at the Sch...

People protest in front of the European Council to show solidarity with the people of Aleppo in Syria still hit by air strikes. They gather at the Sch...

Supporters queue in the rain for a Donald Trump rally in Charleston, W.Va., May 5, 2016. Shortly after House Speaker Paul Ryan said Thursday that he w...

In this photo taken on Thursday, May 5, 2016, Pakistani children Abdul Rasheed, 9, left, and Shoaib Ahmed, 13, lie exhausted in a bed at a hospital i...

In this photo taken on Thursday, May 5, 2016, Abdul Rasheed, 9, front, and Shoaib Ahmed, 13, lie in a bed at a hospital in Islamabad, Pakistan. The b...

In this photo taken on Thursday, May 5, 2016, Pakistani Dr. Javed Akram, left, examines children Abdul Rasheed, 9, centre left, and Shoaib Ahmed, 13...

In this May 5, 2016 photo provided by the Royal Canadian Mounted Police Alberta, an RCMP officer surveys the damage on a street in fire-ravaged Fort...

MEDITERRANEAN SEA (May 5, 2016) Sailors participate in a low light small arms gun shoot aboard the guided-missile destroyer USS Porter (DDG 78) May 5,...

Hillary Clinton tales photos with the crowd during a campaign event at East Los Angeles College, May 5, 2016. California's June 7 vote is the largest...

Hillary Clinton speaks during a campaign event at East Los Angeles College, May 5, 2016. California's June 7 vote is the largest prize in the Democrat...

FILE -- A supporter during a Donald Trump rally in Bridgeport, Conn., April 23, 2016. One day after assuring Americans he is not running for president...

Donald Trump speaks during a campaign rally in Charleston, W.Va., May 5, 2016. Shortly after House Speaker Paul Ryan said Thursday that he was "not re...

President Barack Obama with first lady Michelle Obama during an event commemorating the 75th anniversary of the USO, at Joint Base Andrews in Maryland...

In this Thursday, May 5, 2016 photo, spring water from Little Herman Creek pours out of the hillside from in Cascade Locks, Ore. A proposal for Nestle...