The Ukrainian Foreign Ministry addressed a note of protest to the Russian Federation due to a visit of Valentina Matviyenko, the Speaker of the Federation Council of Russia, to the occupied Crimea.
The document notes that the trip of a group of high-ranking officials led by the Chairman of the Federation Council of the Federal Assembly of Russia took place with a flagrant violation of Ukrainian legislation and international law.
Reference: In March 2014, Russia annexed the Ukrainian Crimea by introducing its troops and holding an illegal referendum. March 18, the so-called agreement on the annexatoin of the Crimea and Sevastopol to Russia was signed in the Kremlin. The countries of the West and international organizations did not recognize the annexation of the Crimea and imposed a series of economic sanctions against Russia.