The 2008 Liechtenstein tax affair is a series of tax investigations in numerous countries whose governments suspect that some of their citizens have evaded tax obligations by using banks and trusts in Liechtenstein; the affair broke open with the biggest complex of investigations ever initiated for tax evasion in Germany. It was also seen as an attempt to put pressure on Liechtenstein, then one of the remaining uncooperative tax havens—along with Andorra and Monaco—as identified by the Paris-based Organisation for Economic Co-operation and Development in 2007. On 27 May 2009 the OECD removed Liechtenstein from the blacklist of uncooperative countries.