Former US president Bill Clinton met with the German Chancellor Angela Merkel in Berlin on Tuesday for an informal interview. Clinton came to Berlin to give a keynote speech at the 47th Annual Meeting of the European Petrochemical Association (EPCA), held at the Intercontinental Hotel between October 6 and 8. More than 2600 delegates attended the forum, mostly CEOs and top-level executives from the 700 companies that comprise the EPCA. Since leaving the White House in 2001 and under the Clinton Foundation, the 42nd president of the United States has been advocating for development aid projects and against climate change.