The Dalai Lama plays with the bald spot on a reporter's head as he arrives for a news conference prior to a public speech to thousands at the UC San Diego campus in San Diego, California, U.S. June 16, 2017. REUTERS/ Mike Blake 

The Dalai Lama laughs after playing with a bald spot on a reporter's head as he arrives for a news conference prior to a public speech to thousands at the UC San Diego campus in San Diego, California, U.S. June 16, 2017. REUTERS/ Mike Blake 

Elladj Balde of Canada performs during the gala exhibition at the ISU Grand Prix of Figure Skating in Nagano, Japan, November 29, 2015. REUTERS/Yuya Shino

Retired Senior Volunteer Patrol member Henry Miller works at an accident scene during his evening patrol in San Diego, California, United States February 10, 2015. When you think of a police car patrolling the streets of a U.S. city, the first thing that comes to mind may not be an 88-year-old World War II veteran teamed up with a pilot from the Vietnam war – unless you are travelling through San Diego, California. The Retired Senior Volunteer Patrol, former airline pilots, paramedics or military personnel among them, spot stolen vehicles and help free up regular serving officers. In the process the unarmed recruits often get a new lease of life after finding a more sedate retirement didn’t suit them. REUTERS/Mike Blake TPX IMAGES OF THE DAY

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The mother and father of Muhammad Musallam, an Israeli Arab held by Islamic State in Syria as an alleged spy, react beside a picture of him in their East Jerusalem home March 10, 2015. A video posted online by Islamic State militants on Tuesday showed a child killing Muhammad Musallam, an Israeli Arab accused by the group of being a Mossad spy, with a bullet to the head. Reuters could not immediately verify the authenticity of the footage, which also appeared on Twitter feeds used by Islamic State supporters. Israeli security officials said they were aware of the video but could not confirm that it was authentic. REUTERS/Ammar Awad (JERUSALEM - Tags: CIVIL UNREST POLITICS CONFLICT TPX IMAGES OF THE DAY) 

Ibrahim Saied Al Sayeeh places a bee on the head of a man suffering from alopecia so the bee can sting the man, at the centre opened by his father Haj Saied Al Sayeeh, in Cairo August 29, 2014. Haj Saied Al Sayeeh believes that the venom released by bees when they sting has special properties, which when used on specific parts of the body, can cure ailments like kidney problems, appendicitis and even cancer. In 2004, Haj Saied Al Sayeeh opened this centre and began treating patients free of charge with bee venom to provide relief for those suffering from rheumatic pain, nerve inflammation and hepatitis C. The centre claims that they have succeeded in curing these conditions for people coming from all over Cairo. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: HEALTH SOCIETY ANIMALS) 

A pedestrian looks at an electronic board displaying various countries' stock market indices outside a brokerage in Tokyo December 24, 2013. Tokyo's Nikkei sped to a six-year peak, adding about 0.8 percent and topping the 16,000-mark, driven by buying from long-only investors after Wall Street marched upwards. Japan's benchmark was up more than 50 percent this year, on track for
its best annual rise since 1972. REUTERS/Yuya Shino (JAPAN - Tags: BUSINESS) 

A man looks at a stock index board outside a brokerage in Tokyo January 30, 2013. Japan's Nikkei average ended above 11,000 points for the first time in 33 months on Wednesday, led by gains in exporters and interest rate-sensitive sectors such as real estate on persistent expectations of more monetary easing by the Bank of Japan. REUTERS/Toru Hanai (JAPAN - Tags: BUSINESS) 

The outgoing Archbishop of Canterbury Rowan Williams is embraced at the Assembly Hall of Church House, after a vote of the General Synod of the Church of England in London November 20, 2012. The Church of England voted on Tuesday against legislation that would have allowed the ordination of women bishops, the culmination of more than 10 years of divisive debate, after the proposal failed to win the backing of lay members. REUTERS/Yui Mok/POOL (BRITAIN - Tags: RELIGION POLITICS TPX IMAGES OF THE DAY) 

Nurzahan, 45, (L) sits with her son Abdus Shakur, 18, (R) in front of a house as they hide with other relatives in Teknaf October 31, 2012. Nurzahan, who belongs to a group of Rohingya Muslims currently hiding with local villagers to avoid being arrested by border guards of Bangladesh, walked a whole day and night to neighbouring Bangladesh after fleeing the mass burning of houses and violence in Myanmar. According to them, Shakur was attacked by Rakhains and stabbed in the head as they tried to kill him. REUTERS/Andrew Biraj (BANGLADESH - Tags: CIVIL UNREST POLITICS SOCIETY IMMIGRATION) 

Novak Djokovic of Serbia appeals to the umpire during the men's singles final against Andy Murray of Britain at the Shanghai Masters tennis tournament October 14, 2012. REUTERS/Stringer (CHINA - Tags: SPORT TENNIS) 

A boy holds a flower as people gather at the tomb of former Yemeni President Ibrahim Al-Hamdi on the 35th anniversary of his assassination in Sanaa October 11, 2012. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: ANNIVERSARY POLITICS CIVIL UNREST) 

A race fan watches horses work out and exercise early in the morning at Pimlico Race Course in Baltimore, Maryland, May 16, 2012. REUTERS/Patrick Smith (UNITED STATES - Tags: SPORT HORSE RACING TPX IMAGES OF THE DAY) 

A swimmer wraps himself in a foil heat blanket at Hillingdon Lido in north London April 28, 2012. The lido was used as a training pool in 1948 when it was known as Uxbridge Lido, and after falling into disrepair in the late twentieth century, it was restored to its art-deco glory and reopened in 2011. The South Korean team will train here in 2012 whilst all swimming finals will take place in Olympic Park in the new 18,000 seat indoor 50 metre pool. Picture taken April 28, 2012. REUTERS/Toby Melville (BRITAIN - Tags: SPORT OLYMPICS) ATTENTION EDITORS PICTURE 07 OF 32 FOR PACKAGE 'LONDON 1948 - OLYMPIC LEGACY' 

A member of the public uses his tablet computer to film as Britain's Queen Elizabeth takes part in a walkabout from Windsor Castle to the Guildhall in Windsor in southern England April 30, 2012. REUTERS/Toby Melville (BRITAIN - Tags: ENTERTAINMENT SOCIETY ROYALS) 

A policeman (R) brings a suspected militant for interrogation at police headquarters in Mosul, 390km (240 miles) north of Baghdad, March 12, 2012. Arriving in Mosul from Baghdad, you feel the sinister lurch of going back in time to 2006 or 2007, the days of sectarian slaughter when Iraq's militant gangs stalked the streets and killed tens of thousands of their countrymen. The familiar signs, long-since vanished from Baghdad, are all still here: the towering concrete blast walls, the dirt obstacles piled in the centre of the roads to slow down racing attackers, the buildings wrecked by the impact of shells. Picture taken March 12, 2012. To match Insight IRAQ/QAEDA REUTERS/Mohammed Ameen (IRAQ - Tags: CONFLICT) 

A zookeeper poses with a Jungle Nymph stick insect during a media event for the annual stocktake at Whipsnade Zoo in Bedfordshire January 10, 2012. REUTERS/Olivia Harris (BRITAIN - Tags: ANIMALS ENVIRONMENT) 

EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on leaving the office to report, film or take pictures in Tehran.
A cleric attends Friday prayers at a university in Tehran December 30, 2011. REUTERS/Morteza Nikoubazl (IRAN - Tags: RELIGION EDUCATION) 

Two men read newspapers in the financial district of Canary Wharf in London August 17, 2011. World stocks ticked lower while top-rated government bonds rallied on Wednesday as investors grew concerned that French and German plans for closer fiscal integration may be insufficient to stop the regional debt crisis from spreading further. REUTERS/Kevin Coombs (BRITAIN - Tags: BUSINESS) 

A man monitors stock market prices inside a brokerage in Taipei August 8, 2011. Taiwan stocks plunged 3.82 percent to a 13-month low closing low on Monday, joining other declining Asian bourses after a downgrade of the U.S. credit rating. REUTERS/Pichi Chuang (TAIWAN - Tags: BUSINESS IMAGES OF THE DAY) 

Charlene Princess of Monaco wipes tears as she leaves the Sainte Devote Church after her wedding to Prince Albert II of Monaco in Monaco July 2, 2011. REUTERS/Francois Mori/Pool (MONACO - Tags: ENTERTAINMENT ROYALS) (MONACO ROYAL WEDDING) 

Monaco's Prince Albert II (L) and Princess Charlene kneel at the altar during their religious wedding ceremony at the Palace in Monaco July 2, 2011. REUTERS/Lionel Cironneau/Pool (MONACO - Tags: ROYALS ENTERTAINMENT IMAGE OF THE DAY TOP PICTURE) 

A supporter waits for the arrival of Portuguese Social Democrat Party leader Pedro Passos Coelho before a rally in Lisbon June 3, 2011. Portugal holds a snap general election on Sunday, June 5, which could end months of political and economic turmoil as the next government gets down to enacting tough austerity under a 78-billion-euro bailout. REUTERS/Rafael Marchante (PORTUGAL - Tags: POLITICS ELECTIONS IMAGES OF THE DAY) 

A protester hits a pot during a protest rally against a new austerity package in front of the parliament building in Athens May 26, 2011. Greek Prime Minister George Papandreou has invited political party leaders to meet on Friday in a fresh bid to reach consensus on steps to exit a debt crisis that the IMF warned would likely take a decade to overcome. REUTERS/John Kolesidis (GREECE - Tags: POLITICS BUSINESS CONFLICT) 

U.S. President Barack Obama is seen on a television in the background of a barber shop in Al Amari refugee camp near the West Bank city of Ramallah May 19, 2011. Obama in a Middle East speech on Thursday rejected what he called an effort to isolate Israel at the United Nations in September. REUTERS/Mohamad Torokman (WEST BANK - Tags: POLITICS SOCIETY) 

A man smokes on a street of Madrid a month after one of Europe's toughest smoking laws went into effect February 2, 2011. Madrilenyos are famous for living in the street on spring
and summer evenings, strolling and packing outdoor cafes.
But with the new ban on indoor smoking, terraces are full
of coffee, beer and wine drinkers even when temperatures
approach zero celsius.Spaniards have dubbed the smoking spree outside bars the "cigarron," a play on another Madrid phenomenon, the "botellon," summertime gatherings of young unemployed people who can't afford bars to drink cheaply in plazas and parks. To match Reuters Life! SPAIN-TOBACCO/ REUTERS/Susana Vera (SPAIN - Tags: SOCIETY IMAGES OF THE DAY) 

A Buddhist monk walks down a road in central Yangon December 26, 2010. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY) 

Ales Cerin says grace before partaking in a home-cooked meal in his home in Ljubljana November 23, 2010. Cerin, a father of four who wants to promote a simple and modest lifestyle, raise awareness of global poverty and over-consumption in the West, discovered he could do it but only if he grew his own vegetables and fruit. Cerin has been spending 1.01 euro a day on average for food over the past two months, eating fruits and vegetables grown in his garden. To match Reuters Life! SLOVENIA-FOOD/SIMPLE REUTERS/Bor Slana (SLOVENIA - Tags: SOCIETY AGRICULTURE BUSINESS) 

A Palestinian man pulls threads on a loom while making a keffiya headdress at a textile factory in the West Bank city of Hebron October 26, 2010. The factory, owned by the Hirbawi family for over 40 years, produces some 100 keffiyas per day. REUTERS/Ammar Awad (WEST BANK - Tags: BUSINESS SOCIETY) 

Britain's Welfare Minister Iain Duncan Smith speaks in a television studio at the Conservative Party Conference in Birmingham in central England October 4, 2010. Prime Minister David Cameron will address his first party conference as leader of Britain's coalition government later in the week. REUTERS/Toby Melville (BRITAIN - Tags: POLITICS) 

A pro-Palestinian protester kneels in front of a police cordon outside the Israeli embassy in Athens May 31, 2010. Greek police fired teargas on Monday at demonstrators protesting outside the Israeli embassy in Athens over Israel's storming of a Gaza-bound aid flotilla and the killing of pro-Palestinian activists. REUTERS/Yannis Behrakis (GREECE - Tags: POLITICS CIVIL UNREST) 

Preakness hopeful Aikenite gets a kiss from Adrian Briato in the Preakness barn at Pimlico race track in Baltimore, Maryland May 13, 2010. REUTERS/Molly Riley (UNITED STATES - Tags: SPORT HORSE RACING) 

A man raises his arm at Biarritz beach, southwestern France, in this January 10, 2007 file photo. The ageing of Europe may open opportunities to sell savings products, but it also spells a real threat to parts of the financial services industry. Pensions experts call it the "toxic tail". Like the subprime crisis faced by by banks in 2008, the risk of people living for up to 20 years after retirement seems to have crept up on an industry based on using historical data to calculate people's chances of an early death. Picture taken January 10, 2007. To match analysis AGE-EUROPE/BONDS REUTERS/Regis Duvignau/Files (FRANCE - Tags: BUSINESS SOCIETY) 

A dentist with NGO Island Impact Ministeries works in a provisional camp in Port-au-Prince March 20, 2010. International donors are ready to provide $3.8 billion over 18 months to help Haiti rebuild after its devastating January 12 earthquake, experts and officials preparing a high-level donors conference said. REUTERS/Eduardo Munoz (HAITI - Tags: DISASTER SOCIETY POLITICS HEALTH) 

Francisco Amador, a 58-year-old dentist, dressed as Santa Claus prepares before his visit to Hospital Escuela in Tegucigalpa December 23, 2009. Amador, who works for a nursing home, has dressed up as Santa Claus every year since 1971, to distribute toys and food to the sick and poor. REUTERS/Edgard Garrido (HONDURAS - Tags: SOCIETY) 

People attend the presentation ceremony of the "New Grammar of the Spanish Language" book at the headquarters of the Spanish Royal Academy in Madrid December 10, 2009. REUTERS/Susana Vera (SPAIN SOCIETY EDUCATION) 

A Jordanian man looks at gold bracelets displayed at one of the shops in Amman's gold market October 7, 2009. Gold's run to a record $1,048.20 per ounce on Wednesday was greeted cautiously by consumers in Asia and the Middle East, with some cashing in gains while the majority were hanging on for further rises. REUTERS/Muhammad Hamed (JORDAN BUSINESS) 

A Chinese investor reacts as he watches a screen showing stock information at a brokerage house in the financial district of Beijing June 23, 2009. Asian stocks tumbled on Tuesday, after falling commodity prices and a sharp drop on Wall Street spooked investors into taking profits and buying the yen on speculation the rapid pace of recovery may not be sustainable. REUTERS/David Gray (CHINA BUSINESS IMAGES OF THE DAY) 

An art critic examines Michaelangelo's first painting "The Torment of Saint Anthony" on display at the Metropolitan Museum of Art in New York June 15, 2009. REUTERS/Jacob Silberberg (UNITED STATES SOCIETY) 

A man stands next to the painting "Mother" by Spanish artist Joaquin Sorolla during the media presentation of the Joaquin Sorolla exhibit at Madrid's Prado Museum May 22, 2009. REUTERS/Susana Vera (SPAIN ENTERTAINMENT) 

A model presents a creation by Stand house design at the final day of the Rosemount Fashion Festival in central Sydney May 1, 2009. REUTERS/Daniel Munoz (AUSTRALIA FASHION IMAGES OF THE DAY) 

A tourist visits Fiela Temple in Aswan April 26, 2009. REUTERS/Asmaa Waguih (EGYPT SOCIETY) 

A child touches a saxophone of a performer during a concert for babies by "Companhia Musicalmente" group in Sintra, near Lisbon April 20, 2009. The baby concerts were created in 1998 by a group of musicians in Portugal inspired by the Music Learning Theory of North American author Edwin Gordon. The group wanted to give infants a first experience listening to live music in a free environment, where they can play and interact with the performers, other babies, parents and relatives. Picture taken April 19, 2009. REUTERS/Nacho Doce (PORTUGAL ENTERTAINMENT EDUCATION SOCIETY) 

A man looks for jobs on a computer at the Economic Development Department in San Francisco, California April 17, 2009. California's unemployment rate rose to a record 11.2 percent in March and analysts expect job losses across most industries in the most populous U.S. state to increase through much of this year.REUTERS/Robert Galbraith (UNITED STATES BUSINESS SOCIETY) 

A man looks at bottles of wine on display at the Vinitaly wine expo in Verona April 3, 2009. Italy, the world's biggest wine producer, sees the economic crisis as a way to build on the trend to higher-quality, higher-priced wines, Lamberto Vallarino Gancia, the chairman of the Federvini trade group, said on April 2, 2009 on the sidelines of the sprawling Vinitaly wine fair. Picture taken April 3, 2009. REUTERS/Alessandro Garofalo (ITALY BUSINESS IMAGE OF THE DAY TOP PICTURE) 

Traders work on the floor of the New York Stock Exchange March 30, 2009. REUTERS/Shannon Stapleton (UNITED STATES BUSINESS) 

Robert Zollitsch, archbishop of Freiburg and head of Germany's bishops' conference, gives a statement ahead of the opening of a general meeting of the German bishops' conference in Hamburg March 2, 2009. REUTERS/Christian Charisius (GERMANY) 

A man looks at Panasonic Corp's televisions displayed at an electronic shop in Tokyo January 28, 2009. Panasonic is likely to report an annual net loss of about 100 billion yen ($1.1 billion) on restructuring charges, weak demand for consumer electronics and the effects of the strong yen, a newspaper said. REUTERS/Yuriko Nakao (JAPAN) 

A man walks past a SoftBank shop in Tokyo December 1, 2008. REUTERS/Stringer (JAPAN) 

A man gets a message written on his head after taking a holy dip in the Sangam, confluence of three rivers, the Ganges, the Yamuna and mythical Saraswati in the northern Indian city of Allahabad January 1, 2009. The message reads: Happy New Year 2009". REUTERS/Jitendra Prakash (INDIA) 

A man plays the piano at the lobby of Taj Mahal hotel after its tower section reopened in Mumbai December 21, 2008. Taj Mahal hotel, which was attacked by armed militants last month, reopened its tower section on Sunday. REUTERS/Arko Datta (INDIA) 

A broker reacts on the trading floor at BGC Partners in London November 6, 2008. World stocks remained in the red while Wall Street was set for a weaker start on Thursday after a shock 1.5-point cut in UK interest rates and easing in euro zone and Swiss rates underscored troubles facing the global economy. REUTERS/Luke MacGregor (BRITAIN) 

McLaren Formula One driver Lewis Hamilton (L) of Britain celebrates with McLaren team boss Ron Dennis after winning the 2008 FIA Formula One Championship at the Brazilian F1 Grand Prix in Sao Paulo November 2, 2008. REUTERS/Bruno Domingos (BRAZIL) 

Britain's Prince Charles smells a mushroom during his visit to Afan Forest in Shinano, central Japan October 30, 2008. REUTERS/Issei Kato (JAPAN) 

An investor looks at an electronic board showing stock price index at a stock brokerage firm in Seoul October 29, 2008. Seoul shares reversed earlier near 8-percent gains to trade 7.5 percent lower on Wednesday afternoon, with banking issues plunging across the board on deepening sectoral worries. The Korea Composite Stock Price Index was down 7.45 percent to 924.74 points as of 0516 GMT, off from the high of 1,078.33 points and moving in more than a 150-point range between the day's highs and lows. REUTERS/Lee Jae-Won (SOUTH KOREA) 

A trader looks at a screen with the Chilean share price index IPSA at the Santiago Stock Exchange October 27, 2008. Chile's peso closed at a five-year low on Monday as global markets slipped and the dollar advanced. REUTERS/Ivan Alvarado (CHILE) 

A shopper looks at a pair of shoes at a market in Tokyo October 16, 2008. REUTERS/Kim Kyung-Hoon (JAPAN) 

Iran's Foreign Minister Manouchehr Mottaki (bottom) speaks with foreign ambassadors during an official meeting in Tehran, October 13, 2008. REUTERS/Morteza Nikoubazl (IRAN) 

A weary trader rubs his eyes as he pauses outside the New York Stock Exchange following the end of the trading session in New York October 9, 2008. The Dow Jones Industrial Average dropped 678.91 points on the day to finish at 8579.19 closing below 9,000 for the first time since 2003. REUTERS/Mike Segar (UNITED STATES)