Transport for London Lost Property ...Transport for London worker Paul Burke pushes a trolley loaded with items of lost property at the Transport for London Lost Property Office, in central London, which sorts and stores the items left on London's public transport system. PRESS ASSOCIATION Photo. Issue date: Monday February 1, 2016. Last year 22% of the 302,714 items handed in were returned to their rightful owners including a brown envelope containing £15,000 and an urn of ashes that had been kept by workers at the lost property office for almost seven years. See PA story TRANSPORT Property. Photo credit should read: Dominic Lipinski/PA Wire

Dominic Lipinski/PA

Transport for London worker Paul Burke pushes a trolley loaded with items of lost property at the Transport for London Lost Property Office, which sorts and stores the items left on London’s public transport system. Last year 22% of the 302,714 items handed in were returned to their rightful owners, London 

TOPSHOT - Palestinian members of the Ezz...TOPSHOT - Palestinian members of the Ezzedine al-Qassam Brigades, the armed wing of the Hamas movement, take part in a gathering on January 31, 2016 in Gaza city to pay tribute to their fellow militants who died after a tunnel collapsed in the Gaza Strip.  Seven Hamas militants were killed on January 28, 2016 after a tunnel built for fighting Israel collapsed in the Gaza Strip, highlighting concerns that yet another conflict could eventually erupt in the Palestinian enclave.  / AFP / MAHMUD HAMSMAHMUD HAMS/AFP/Getty Images

Muhmud Hams/AFP

Palestinian members of the Ezzedine al-Qassam Brigades, the armed wing of the Hamas movement, take part in a gathering in Gaza city to pay tribute to their fellow militants who died after a tunnel collapsed in the Gaza Strip 

Presidential Candidate Hillary Clinton Holds Iowa Get Out The Caucus Rallies...A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S., on Sunday, Jan. 31, 2016. Hillary Clinton is holding onto a slim lead over Bernie Sanders in Iowa as Democrats prepare for Monday's caucuses, though an outpouring of young voters and those who say the system is rigged could enable Sanders to pull off an upset, according to a new poll. Photographer: Daniel Acker/Bloomberg

Daniel Acker/Bloomberg

A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S 

Honor guards attend a ceremony in Kiev...Honor guards attend a ceremony to commemorate several hundred students who died during a battle on January 29, 1918 while defending the Ukrainian capital from the Bolsheviks, in Kiev, Ukraine January 29, 2016. REUTERS/Gleb Garanich

Gleb Garanich/Reuters

Honor guards attend a ceremony to commemorate several hundred students who died during a battle on January 29, 1918 while defending the Ukrainian capital from the Bolsheviks, in Kiev, Ukraine 

Peter Byrne/PA

Waves crash over the sea wall in Blackpool, as Storm Gertrude is sweeping the country with winds of more than 90mph, leaving thousands of homes without power, buildings damaged and transport disrupted

 Italian Prime Minister Renzi gestures to German Chancellor Merkel during a news conference at the Chancellery in Berlin... Italian Prime Minister Matteo Renzi gestures to German Chancellor Angela Merkel during a news conference at the Chancellery in Berlin, Germany, January 29, 2016.      REUTERS/Fabrizio Bensch

Fabrizio Bensch/Reuters

Italian Prime Minister Matteo Renzi gestures to German Chancellor Angela Merkel during a news conference at the Chancellery in Berlin 

Andy Murray...Andy Murray of Britain yells during his semifinal match against Milos Raonic of Canada at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 29, 2016.(AP Photo/Rafiq Maqbool)

Rafiq Maqbool/AP

Andy Murray of Britain yells during his semifinal match against Milos Raonic of Canada at the Australian Open tennis championships in Melbourne

Kashmiri Muslim devotees pray outside the shrine of Sufi Saint Syed Abdul Qadir Jilani in Srinagar, Indian controlled Kashmir, Friday, Jan. 29, 2016. Thousands of devotees thronged to the shrine, where the Kashmiri Muslim head priest displayed the relics of the Sufi Saint. (AP Photo/Dar Yasin)

Dar Yasin/AP

Kashmiri Muslim devotees pray outside the shrine of Sufi Saint Syed Abdul Qadir Jilani in Srinagar, Indian controlled Kashmir. Thousands of devotees thronged to the shrine, where the Kashmiri Muslim head priest displayed the relics of the Sufi Saint 

TOPSHOT - A fishing boat is seen in the ...TOPSHOT - A fishing boat is seen in the morning general view of the city skyline covered by a smoggy haze in Mumbai on January 29, 2016.  AFP PHOTO / PUNIT PARANJPE / AFP / PUNIT PARANJPEPUNIT PARANJPE/AFP/Getty Images

Punit Paranjpe/AFP

A fishing boat is seen and the city skyline is covered by a smoggy haze in Mumbai 

A volunteer for U.S. Democratic presidential candidate Sanders holds the door open ahead of a campaign rally in Fairfield, Iowa...Billy Hunter, a volunteer for U.S. Democratic presidential candidate Bernie Sanders, holds a door open while waiting for Sanders to arrive at a campaign rally in Fairfield, Iowa January 28, 2016. REUTERS/Mark Kauzlarich

Mark Kauzlarich/Reuters

Billy Hunter, a volunteer for U.S. Democratic presidential candidate Bernie Sanders, holds a door open while waiting for Sanders to arrive at a campaign rally in Fairfield, Iowa 

Nicos Anastasides, Alexis Tsipras, Benjamin Netanyahu...Cypriot president Nicos Anastasides, centre, Greek Prime Minister Alexis Tsipras, left, and  Israeli Prime Minister Benjamin Netanyahu shake hands after leaving their meeting from the presidential palace in capital Nicosia in the Mediterranean island of Cyprus, Thursday, Jan. 28, 2016. The leaders of Cyprus, Greece and Israel met in the Cypriot capital with the aim to strengthen cooperation and bolster stability in a region wracked by conflict. The talks are the first tripartite summit. Discussions will cover newly found offshore gas reserves and tourism, while the leaders will sign a cooperation agreement on water resources. (AP Photo/Petros Karadjias)

Petros Karadjias/AP

Cypriot president Nicos Anastasides, Greek Prime Minister Alexis Tsipras and Israeli Prime Minister Benjamin Netanyahu shake hands after leaving their meeting from the presidential palace in capital Nicosia in the Mediterranean island of Cyprus. The leaders of Cyprus, Greece and Israel met in the Cypriot capital with the aim to strengthen cooperation and bolster stability in a region wracked by conflict 

Gallery assistants pose with the painting 'La Lecon de piano' by Henri Matisse during a media preview of Impressionist and Modern Art Evening Sale at Sotheby's in London...Gallery assistants pose with the painting 'La Lecon de piano' by Henri Matisse during a media preview of Impressionist and Modern Art Evening Sale at Sotheby's in London, Britain January 28, 2016. The picture is estimated to sell for between 12 -18 million British pounds when it is auctioned on February 3 in London.REUTERS/Stefan WermuthEDITORIAL USE ONLY. NO RESALES. NO ARCHIVE

Stefan Wermuth/Reuters

Gallery assistants pose with the painting ‘La Lecon de piano’ by Henri Matisse during a media preview of Impressionist and Modern Art Evening Sale at Sotheby’s in London

A construction worker stands in front of a piece of street art portraying prospective U.S. Presidential candidate Donald Trump, in east London...A construction worker stands in front of a piece of street art portraying prospective U.S. Presidential candidate Donald Trump, in east London, January 28, 2016. An online petition to bar Trump from entering the United Kingdom recently triggered a debate in Parliament after if was signed by over 500,000 people. REUTERS/Andrew Winning EDITORIAL USE ONLY. NO RESALES. NO ARCHIVE

Andrew Winning/Reuters

A construction worker stands in front of a piece of street art portraying prospective U.S. Presidential candidate Donald Trump, in east London

In this photograph taken on January 27, ...In this photograph taken on January 27, 2016 an Afghan woman walks past a mural that also reads "seeking knowledge is obligatory on every Muslim man and woman" in Herat.  AFP PHOTO / Aref KarimiAref Karimi/AFP/Getty Images

Aref Karimi/AFP

An Afghan woman walks past a mural that also reads “seeking knowledge is obligatory on every Muslim man and woman” in Herat

A monkey holds a dice during a performance ahead of the Chinese New Year of the Monkey which falls on February 8, in Hangzhou, Zhejiang province, January 28, 2016. REUTERS/China Daily      TPX IMAGES OF THE DAY     ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.

China Daily/Reuters

A monkey holds a dice during a performance ahead of the Chinese New Year of the Monkey which falls on February 8, in Hangzhou, Zhejiang province

"Pepper", humanoid robots from Japan's t..."Pepper", humanoid robots from Japan's telecommunication giant Softbank, dance to attract customers at the "Pepper World" exhibition to promote show applications for corporate use in Tokyo on January 28, 2016. Softbank announced the company will open a pop-up smartphone shop in Tokyo next month as five Peppers will sell the smartphones to display their skills for customer services.   AFP PHOTO / Yoshikazu TSUNOYOSHIKAZU TSUNO/AFP/Getty Images

Yoshikazu Tsuno/AFP

“Pepper”, humanoid robots from Japan’s telecommunication giant Softbank, dance to attract customers at the Pepper World exhibition 

Hillary Clinton Holds Get Out The Caucus Event In Iowa...ADEL, IA - JANUARY 27:  Democratic presidential candidate former Secretary of State Hillary Clinton greets supporters during a "get out the caucus" event at the Adel Family Fun Center on January 27, 2016 in Adel, Iowa.  With less than a week to go before the Iowa caucuses, Hillary Clinton is campaigning throughout Iowa.  (Photo by Justin Sullivan/Getty Images)

Justin Sullivan/Getty

Democratic presidential candidate former Secretary of State Hillary Clinton greets supporters during a “get out the caucus” event at the Adel Family Fun Center in Adel, Iowa. With less than a week to go before the Iowa caucuses, Hillary Clinton is campaigning throughout Iowa 

ATTENTION EDITORS - REUTERS PICTURE HIGHLIGHT...ATTENTION EDITORS - REUTERS PICTURE HIGHLIGHTKON107A man grasps a bag of tangerines as people receive free produce, handed out by farmers, during a protest over the government's proposal to overhaul the country's ailing pension system in Athens, Greece, January 27, 2016. REUTERS/Alkis Konstantinidis      TPX IMAGES OF THE DAYREUTERS 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

Alkis Konstantinidis /Reuters

A man grasps a bag of tangerines as people receive free produce, handed out by farmers, during a protest over the government’s proposal to overhaul the country’s ailing pension system in Athens, Greece 

A model presents a creation by Lebanese designer Elie Saab as part of his Haute Couture Spring/Summer 2016 collection in Paris...A model presents a creation by Lebanese designer Elie Saab as part of his Haute Couture Spring/Summer 2016 collection in Paris, France January 27, 2016. REUTERS/Gonzalo Fuentes

Gonzalo Fuentes/Reuters

A model presents a creation by Lebanese designer Elie Saab as part of his Haute Couture Spring/Summer 2016 collection in Paris 

A member of the Indian military band reads a newspaper as he takes a break during a rehearsal for the "Beating the Retreat" ceremony in New Delhi...A member of the Indian military band reads a newspaper as he takes a break during a rehearsal for the "Beating the Retreat" ceremony in New Delhi, India, January 27, 2016. The ceremony symbolises retreat after a day on the battlefield, and marks the official end of the Indian Republic Day celebrations. It is held every year on January 29. REUTERS/Anindito Mukherjee

Anindito Mukherjee/Reuters

A member of the Indian military band reads a newspaper as he takes a break during a rehearsal for the “Beating the Retreat” ceremony in New Delhi, India