"Because of a series of activities linked to the newly-formed government, the planned visits of the foreign minister to Argentina and Cuba will not take place on the scheduled days," the ministry said.
According to the ministry, a deputy foreign minister will represent Russia at the upcoming G20 foreign ministers' meeting in Buenos Aires, scheduled to take place on May 20-21.
READ MORE: Cuba's New President Expected to ‘Deepen the Revolution'
Earlier, Cuba's National Assembly of People's Power (parliament) elected Miguel Diaz-Canel as the new president of the country, who had previously held the post of first deputy chairman of the State Council of Cuba.
Miguel Diaz-Canel succeeded Raul Castro, the 86-year-old former head of the country's Council of State and Cabinet, who became the head of the Cuban state in 2008 after his older brother Fidel.