A report, "Investment in Turkey," published by PKF Istanbul, an international consulting and audit company, shows that the U.S., Germany and the U.K. are the most successful investors in Turkey.

Austria, Russia and France perform very poorly in all aspects of the report, which includes cultural, commercial-managerial and political aspects of investment. According to this, U.S. investors are the best at cultural integration of investments in Turkey while in the political aspect, all countries perform moderately in determining the level of uncertainty in politics.

Also, the U.S., Germany and the U.K. are the best in commercial management of investments and are most effective in stakeholder communication.