Question: Sven Anders Hedin, KNO1kl RVO, (19 February 1865 - 26 November 1952) was a Swedish geographer, topographer, explorer, photographer, travel writer, and illustrator of his own works. During four expeditions to Central Asia, he made the Transhimalaya known in the West and located sources of the Brahmaputra, Indus and Sutlej Rivers. He also mapped lake Lop Nur, and the remains of cities, grave sites and the Great Wall of China in the deserts of the Tarim Basin. In his book Fran pol till pol (From Pole to Pole), Hedin describes a journey through Asia and Europe between the late 1880s and the early 1900s.

Hedin was a monarchist. From 1905 onwards he took a stand against the move toward democracy in his Swedish homeland. He warned of the dangers he assumed to be coming from Czarist Russia, and called for an alliance with the German Empire. Therefore, he advocated a strengthened national defence, with a vigilant military preparedness. August Strindberg was one of his opponents on this issue, which divided Swedish politics at the time. In 1912 Hedin publicly supported the Swedish coastal defense ship Society. He helped collect public donations for the building of the coastal defense ship HSwMS Sverige, which the Liberal and anti-militarist government of Karl Staaff had been unwilling to finance. In early 1914, when the Liberal government enacted cutbacks to the country's defenses, Hedin wrote the Courtyard Speech, in which King Gustaf V promised to strengthen the country's defenses. The speech led to a political crisis that ended with Staaff and his government resigning and being replaced by a non-party, more conservative government.  He developed a lasting affinity for the German empire, with which he became acquainted during his formal studies. This is also shown in his admiration for Kaiser Wilhelm II, whom he even visited in exile in the Netherlands. Influenced by imperial Russian and later the Soviet union's attempts to dominate and control territories outside its borders, especially in Central Asia and Turkestan, Hedin felt that Soviet Russia posed a great threat to the West, which may be part of the reason why he supported Germany during both World Wars.  He viewed World War I as a struggle of the German race (particularly against Russia) and took sides in books like Ein Volk in Waffen. Den deutschen Soldaten gewidmet (A People in Arms. Dedicated to the German Soldier). As a consequence, he lost friends in France and England and was expelled from the British Royal Geographical Society, and from the Imperial Russian Geographical Society. Germany's defeat in World War I and the associated loss of its international reputation affected him deeply. That Sweden gave asylum to Wolfgang Kapp as a political refugee after the failure of the Kapp Putsch is said to be primarily attributable to his efforts.

Using a quote from the above article, answer the following question: Why did he think that they posed a threat?
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Answer: Soviet union's attempts to dominate and control territories outside its borders, especially in Central Asia

Problem: Safin was born in Moscow to Tatar parents, Mubin ("Mikhail") Safin and Rauza Islanova. He speaks Russian, English, and Spanish as well as his native Tatar. His parents are former tennis players and coaches. His younger sister, Dinara, is a former world number one professional tennis player and silver medalist at the 2008 Olympic Games in Beijing.

A succession of injuries hindered Safin's progress throughout his career.  In 2003, he missed the majority of the season due to a wrist injury.  During the 2005 clay-court season, Safin suffered a knee injury, which he played through all the way up to Wimbledon with the help of pain killers and anti-inflammatories. Safin was subsequently defeated in the early rounds of each of the seven tournaments he played between the Australian Open and the French Open, culminating in an early round defeat at the French Open. Safin made a surprise finals appearance at the Wimbledon tune-up tournament in Halle on grass. He lost the final narrowly to the defending champion, Federer. He only played one tournament in the summer hard-court season, in Cincinnati, where he lost in the quarterfinals to Robby Ginepri. He also missed the Tennis Masters Cup.  Injuries continued to bother Safin in 2006. Although Safin made appearances at the 2006 ATP Masters tournaments at Indian Wells, Miami, Monte Carlo, Rome and Hamburg, his ranking plummeted to as low as No. 104. He began to recover in time for the 2006 US Open, in which Safin defeated Argentine David Nalbandian, who was then world No. 4 in a riveting second-round match. Safin then lost in the fourth round to former world No. 2 German Tommy Haas, also in a fifth-set tiebreaker. Positive performances at the Thailand Open, where he was narrowly edged out by No. 7 seed, James Blake, and the Kremlin Cup in Moscow, the first all-Russian final at that event, losing to compatriot, Ukrainian-born Nikolay Davydenko, marked Safin's recovery. Despite the injury, Safin still posted 7 wins against top ten players in 2006, fourth-most on the ATP tour behind just Federer (19), Nadal (10), and Blake (8).

Did they prevent him from playing?

Answer with quotes:
He began to recover in time for the 2006 US Open,