The trouble began after my fund launched a campaign to clean up the multi-billion dollar corporate malfeasance taking place in the Russian state-owned gas monopoly Gazprom, and in Surgutneftegaz. After we named names and exposed the details of several enormous corruption schemes, the Russian foreign ministry declared that I was a "threat to national security". On November 13, 2005, I was deported and barred from re-entering the country.My deportation was the beginning of an unimaginable nightmare. On June 4, 2007, the Russian police raided my offices in Moscow, seizing documents which were then used by Russian officials to expropriate our investment holding companies, forge billions of dollars of fake liabilities and embezzle taxes that we had paid to the Russian government the previous year. Incredibly, officials then approved – overnight – the largest fraudulent tax refund in Russian history, amounting to US$230 million. This was paid out two days later to a group of criminals working hand in hand with corrupt officials. Meanwhile, my employees and I received anonymous death threats. So we hired a young Russian lawyer named Sergei Magnitsky to investigate. Working with lawyers and forensic investigators, he pieced together evidence of the criminal conspiracy and testified on the record against senior police officials, judges and criminals involved. Sergei was then arrested by the same police officers he had provided evidence against, locked away without bail or trial and shuffled between increasingly harsher detention centres for a year in an effort to get him to change his testimony. He was denied medical care and family visits, and tortured. After 358 days in detention, he was found dead. The Wall Street Journal (NWS) described his death as a "slow assassination".