1. Is there a ban on donations from foreign interests to political parties?

Source: Article 66, Law on Political Parties, 1983 (Law No. 2820).

Source: Article 79§c, Law on Political Parties, 1983 (as amended in 1999, Law No. 2820).

Source: Article 101§c, Law on Political Parties, 1983 (as amended in 1999, Law No. 2820).

Political parties shall not be entitled to receive any aid either in cash or in kind or donations from foreign governments, international organizations and natural persons or legal entities that are not of Turkish citizenship. 

Source: Article 66§3, Law on Political Parties, 1983 (Law No. 2820)

Political parties shall not, for any reason, accept direct or indirect aid from foreign states, international organizations, and natural and legal persons who are not Turkish nationals [...] 

Source: Article 79§c, Law on Political Parties, 1983 (as amended in 1999, Law No. 2820).

Decision of dissolution of a political party shall be made by the Constitutional Court where: [...]
c) a political party receives financial assistance from foreign states, international organizations and legal and natural persons who are not Turkish nationals. 

Source: Article 101§ c, Law on Political Parties, 1983 (as amended in 1999, Law No. 2820).