To finance his foundation, Gorbachev began lecturing internationally, charging large fees to do so. On a visit to Japan, he was well received and given multiple honorary degrees. In 1992, he toured the U.S. in a Forbes private jet to raise money for his foundation. During the trip he met up with the Reagans for a social visit. From there he went to Spain, where he attended the Expo '92 world fair in Seville and met with Prime Minister Felipe González, who had become a friend of his. He further visited Israel and Germany, where he was received warmly by many politicians who praised his role in facilitating German reunification. To supplement his lecture fees and book sales, Gorbachev appeared in commercials such as a television advertisement for Pizza Hut, another for the ÖBB and a photograph advertisement for Louis Vuitton, enabling him to keep the foundation afloat. With his wife's assistance, Gorbachev worked on his memoirs, which were published in Russian in 1995 and in English the following year. He also began writing a monthly syndicated column for "The New York Times".