A number of potential candidates for EU membership have entered into stabilisation and association agreements with the EU that allow limited participation in certain sectors of the internal market, including Albania, Bosnia and Herzegovina, Kosovo, Northern Macedonia, Montenegro and Serbia. In addition, three individual agreements on a comprehensive and comprehensive free trade area (DCFTA) with the EU have also enabled post-Soviet countries of Georgia, Moldova and Ukraine to access the internal market in certain sectors.  Turkey has access to the free movement of goods through its membership of the Eu-Turkey Customs Union.  The free movement of capital was traditionally regarded as the fourth freedom after goods, workers and people, services and institutions. The original Treaty of Rome required that restrictions on the free movement of capital be lifted only to the extent necessary for the common market. The Maastricht Treaty, which is now enshrined in Article 63 of the FUE Treaty, prohibits «all restrictions on capital movements between Member States and between Member States and third countries.» This means that capital controls of various kinds are prohibited, including restrictions on the purchase of foreign currency, restrictions on the purchase of shares of companies or financial assets, or government requirements for authorisation for foreign investments. On the other hand, the taxation of capital, including corporation tax, capital gains tax and financial transaction tax, is not affected until they are discriminated against on the basis of their nationality. Under the 1988 Capital Movements Directive, Annex I, 13 categories of capital must be released.  In the Baars/Inspector of Belastingen Particulieren case, the Court of Justice held that, for investments in companies, capital rules, not freedom of establishment and freedom of establishment, are not possible if an investment does not allow for «final influence» through shareholder votes or other investor rights.  In this case, a 1964 Dutch wealth tax law was unnecessarily exempted from Dutch investments, but not from Mr. Baars` investments in an Irish business, from tax: wealth tax or exemptions had to be applied in the same way. On the other hand, Article 65, paragraph 1 of the EUTF does not prevent taxpayers who differ because of their home or the location of an investment (since taxes generally focus on the actual source of a person`s profits) or measures to prevent tax evasion.  Apart from the tax cases that largely followed the comments of General Maduro, it was found, in a number of cases, that state gold actions were illegal.