onham's Post-War and Contemporary Art Sale...A woman walks past Untitled (Red Fan) by Kazuo Shiraga, estimated at between £1,500,000 and £2,000,000, during the press preview of Bonham's forthcoming Post-War and Contemporary Art Sale which will be held on February 11 in London. PRESS ASSOCIATION Photo. Picture date: Monday February 1, 2016. Photo credit should read: Anthony Devlin/PA Wire

Anthony Devlin/PA

A woman looks at Untitled (Red Fan) by Kazuo Shiraga, estimated to sell between £1,500,000 and £2,000,000 at Bonham’s forthcoming Post-War and Contemporary Art Sale which will be held on February 11 in London 

An  Afghan vendor display fish for sale along the Kabul-Jalalabad highway in Sorubi district of Kabul, Afghanistan, Monday, Feb. 1, 2016. (AP Photo/Rahmat Gul)

Rahmat Gul/AP

An Afghan vendor display fish for sale along the Kabul-Jalalabad highway in Sorubi district of Kabul, Afghanistan 

India Kashmir Protest

AP Photo/Dar Yasin

An Indian police officer baton charges Kashmiri residents who were blocking a road to stop authorities from pulling down illegally built structures around the Nigeen Lake in Srinagar.

Muslim pray as they visit the Hira cave at the Mount Al-Noor during their Umrah Mawlid al-Nabawi in the holy city of Mecca, Saudi Arabia

Amr Abdallah Dalsh  © ters

Muslim pray as they visit the Hira cave at the Mount Al-Noor during their Umrah Mawlid al-Nabawi “Birthday of Prophet Mohammad” in the holy city of Mecca, Saudi Arabia.

Afghan girls stand at the site of a suicide attack in Kabul, Afghanistan...Afghan girls stand at the site of a suicide attack in Kabul, Afghanistan February 1, 2016. Ten people were killed and 20 wounded, most of them civilians in Monday's suicide bomb attack outside a police station in a busy area of western Kabul, Afghan Deputy Interior Minister Ayub Salangi said in a Twitter post. REUTERS/Mohammad Ismail

Mohammad Ismail/Reuters

Afghan girls stand at the site of a suicide attack in Kabul, Afghanistan. Ten people were killed and 20 wounded, most of them civilians in Monday’s suicide bomb attack outside a police station in a busy area of western Kabul

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 

London seen from space

Tim Peake/ESA/NASA

Astronaut Tim Peake’s photo of London viewed from the space station

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 

Indian youths exercise near the sea front during a hazy morning in Mumbai on January 29, 2016.  AFP PHOTO / PUNIT PARANJPEPUNIT PARANJPE/AFP/Getty Images

AFP/Getty Images

Indian youths exercise near the sea front during a hazy morning in Mumbai on Friday

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