Here the NYT answers questions about the Panama Papers- what they are, who is shown to have used the tax havens to avoid taxes, and what this all means. Politburo members in China, relatives of president Xi Jinping, close associates of Mr. Putin of Russia, prime minister Cameron's father, the new head of FIFA, the head of Transparency Chile, president Mauricio Macri of Argentina, prime minister Nawaz Sharif of Pakistan, President Petro Poroshenko of Ukraine, are some of the figures mentioned by the NYT. An unnamed source tapped into the files of offshore law firm Mossack Fonseca in Panama to collect 2.6 terabytes of data or 11.5 million documents that contain this information, and gave it to a German newspaper Suddeutsche Zeitung about a year ago. These papers were then shared with the International Consortium of Investigative Journalists, and 100 news agencies including The Guardian.