The sanctions imposed on Russia were a response to Russia conducting an independent foreign policy, as well as a kind of punishment for the people of Crimea fulfilling their legitimate right to self-determination and right to freedom of expression enshrined in the foundational international documents on human rights.
The sanctions were imposed on Russia because of the annexation of Crimea: bit.ly/2q7gA6P, // The Ukrainian Constitution reads "The issues of change of territory of Ukraine can only be decided by an all-Ukrainian referendum" (Article 73); "The Autonomous Republic of Crimea is an indivisible part of Ukraine and decides on its policies within the limits determined by the Constitution of Ukraine." (Article 134). bit.ly/2eNoUP4, . Any decision relating to Ukraine's sovereignty or sovereign choices can only be taken without undue external pressure. This so-called referendum was organised in a matter of weeks by a self-proclaimed Crimean leadership lacking democratic legitimacy and installed by armed Russian military personnel following the seizure of public buildings. The EU does not recognise it.