Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhine in the Lugansk region on August 18, 2014. A Ukrainian warplane was blown out of the sky over rebel-held territory as fierce clashes between government troops and pro-Russian insurgents left dozens of civilians dead. At least 415,800 people have fled their homes due to fighting between government forces and pro-Russian separatists in eastern Ukraine, the UN refugee agency said on August 20.  AFP PHOTO/ OLEKSANDR RATUSHNIAKOLEKSANDR RATUSHNIAK/AFP/Getty Images

Oleksandr Ratushniak/AFP/Getty

Armed Ukrainian forces detain a pro-Russian militant in the village of Chornukhino in the Lugansk region. At least 415,800 people have fled their homes because of fighting between government forces and pro-Russian separatists in eastern Ukraine, the UN refugee agency said. Read more

A grandfather of three Palestinian children cries outside a hospital morgue in Gaza City...REFILE - CORRECTING YEAR  A grandfather of three Palestinian children who medics said were killed in an Israeli air strike, cries outside a hospital morgue in Gaza City August 21, 2014. An Israeli air strike killed three senior Hamas military commanders in the Gaza Strip on Thursday, the Islamist group said, the clearest sign yet Israel is focusing its assault on those leading attacks from the Palestinian enclave. The Israeli military had no immediate comment on what would constitute the killing of the most senior Hamas men since it launched its offensive on Gaza six week ago with the declared aim of curbing rocket fire into its territory. REUTERS/Suhaib Salem (GAZA - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY CONFLICT)

Suhaib Salem/Reuters

A grandfather of three Palestinian children, who medics say were killed in an Israeli air strike, cries outside a hospital morgue in Gaza City. An Israeli air strike also killed three senior Hamas military commanders in the Gaza Strip on Thursday, the Islamist group said. Read more

Protesters stand in the street as lightning flashes in the night sky in Ferguson, Mo. on Wednesday, Aug. 20, 2014. A grand jury has begun hearing evidence as it weighs possible charges against the Ferguson police officer who fatally shot 18-year-old Michael Brown. (AP Photo/Jeff Roberson)

Jeff Roberson/AP

Lightning flashes over protesters on the streets of Ferguson, Missouri. A grand jury has begun hearing evidence as it weighs possible charges against the Ferguson police officer who fatally shot 18-year-old Michael Brown. Read more

Giant inflatable rubber duck installation by Dutch artist Hofman floats through the Port of Los Angeles as part of the Tall Ships Festival, in San Pedro...A giant inflatable rubber duck installation by Dutch artist Florentijn Hofman floats through the Port of Los Angeles as part of the Tall Ships Festival, in San Pedro, California August 20, 2014. The creation, which is five stories tall and five stories wide, has been seen floating in various cities around the world since 2007. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY MARITIME TPX IMAGES OF THE DAY)

Lucy Nicholson/Reuters

A giant inflatable rubber duck installation by Dutch artist Florentijn Hofman floats through the Port of Los Angeles as part of the Tall Ships Festival, in San Pedro, California. The creation, which is five stories tall and five stories wide, has been seen floating in various cities around the world since 2007. Read more

REUTERS PICTURE HIGHLIGHT...ATTENTION EDITORS - REUTERS PICTURE HIGHLIGHT TRANSMITTED BY 1355GMT ON AUGUST 20, 2014    ESU800  A man returns to his flat at the end of the work day at a Housing Development Board (HDB) public housing estate overlooking the financial district skyline in Singapore August 20, 2014. REUTERS/Edgar Su    REUTERS NEWS PICTURES HAS NOW MADE IT EASIER TO FIND THE BEST PHOTOS FROM THE MOST IMPORTANT STORIES AND TOP STANDALONES EACH DAY. Search for "TPX" in the IPTC Supplemental Category field or "IMAGES OF THE DAY" in the Caption field and you will find a selection of 80-100 of our daily Top Pictures.    REUTERS NEWS PICTURES.     TEMPLATE OUT

Edgar Su/Reuters

A man returns to his flat at the end of the work day at a Housing Development Board public housing estate overlooking the financial district skyline in Singapore. Read more

Pedestrians use umbrellas as they walk in the district of Central in Hong Kong on August 20, 2014. Hong Kong was handed back to China by Britain on July 1, 1997 under a "one country, two systems" agreement, which allows residents civil liberties not seen on the mainland, including free speech and the right to protest. But public discontent is at its highest for years notably over Beijing's insistence that it vet candidates before the vote for the city's next leader in 2017.

Anthony Wallace/AFP/Getty

Pedestrians use umbrellas as they walk in the district of Central in Hong Kong. Hong Kong was handed back to China by Britain on July 1, 1997 under a “one country, two systems” agreement, which allows residents civil liberties not seen on the mainland, including free speech and the right to protest. But public discontent is at its highest for years notably over Beijing’s insistence that it vet candidates before the vote for the city’s next leader in 2017. Read more

Liberia Battles Spreading Ebola Epidemic...MONROVIA, LIBERIA - AUGUST 20:  A member of the Church of Aladura prays on the beach on August 20, 2014 in Monrovia, Liberia. He and other church members were praying for God to rescue Liberia from its current crisis. The Ebola virus has killed more than 1,200 people in four African nations, with more in Liberia than any other country.  (Photo by John Moore/Getty Images)

John Moore/Getty

A member of the Church of Aladura prays on the beach in Monrovia, Liberia. He and other church members were praying for God to rescue Liberia from its current crisis. The Ebola virus has killed more than 1,200 people in four African nations, with more in Liberia than any other country.

Men sleep covered with a mosquito net on a bridge above a train station outside Yangon August 20, 2014. REUTERS/Soe Z

Soe Zeya Tun/Reuters

Men sleep covered with a mosquito net on a bridge above a train station outside Yangon

HMS Plymouth to be scrapped...A statue from Another Place by Anthony Gormley is seen in the foreground as HMS Plymouth is towed away from Liverpool to be scrapped. The warship was part of the mission during the Falklands war and is on its way to Turkey where it will be scrapped.  PRESS ASSOCIATION Photo. Picture date: Wednesday August 20, 2014. See PA story DEFENCE Plymouth. Photo credit should read: Peter Byrne/PA Wire

Peter Byrne/PA

A statue from Another Place by Anthony Gormley is seen in the foreground as HMS Plymouth is towed away from Liverpool to be scrapped. The warship was part of the mission during the Falklands war and is on its way to Turkey where it will be scrapped. Read more

epa04360584 Police in riot gear move in to make arrests as demonstrators protest the shooting death of Michael Brown in Ferguson, Missouri, USA, 19 August 2014. Protestors took to the streets of Ferguson, Missouri for another day to voice their outcry over the police slaying of an unarmed black teenager.  EPA/LARRY W. SMITH

Larry W. Smith/EPA

Police in riot gear move in to make arrests as demonstrators protest the shooting death of Michael Brown in Ferguson, Missouri. Protestors took to the streets of Ferguson, Missouri for another day to voice their outcry over the police slaying of an unarmed black teenager. Read more