2. Is there a ban on donations from foreign interests to candidates?

Art. 11 - "(1) Implementation of the activities of promoting or hindering the preparation and conduct of elections, the nomination, registration of a candidate, the federal list of candidates and election of candidates for deputies of the State Duma, as well as participation in the election campaign in other forms by foreign citizens, stateless persons, foreign organizations, international organizations and international public movements, non-profit organizations that perform functions of a foreign agent, is not allowed."

Source: Article 11 (1), Federal Law on Elections of Deputies to the State Duma of the Federal Assembly of the Russian Federation, 2014

Art. 11 - "(1) Participation of foreign citizens, stateless persons, foreign organizations, international organizations and international public movements, non-profit organizations performing functions of a foreign agent in carrying out activities, facilitating or impeding the preparation and conduct of elections of the President of the Russian Federation, nomination, registration and election of one or another candidate, as well as participation in the election campaign in other forms shall not be permitted."

Source: Article 11 (1), Federal Law on the Presidential Elections in the Russian Federation, 2002