"We see how the role of unilateral sanctions, imposed by certain countries in the framework of their political goals, is increasing. In fact, such measures have become a way to arbitrarily interfere in the affairs of other countries," Medvedev said at the St. Petersburg International Legal Forum, Sputnik News reported.
Russia has been targeted by a series of sanctions imposed by the United States and European Union for allegations that Moscow is arming and supporting pro-Russian forces fighting in eastern Ukraine.
The Kremlin, however, has strongly rejected the accusations.
The sanctions target the Russian energy, banking and military sectors. Moscow has also imposed tit-for-tat sanctions against the EU.
The conflict in eastern Ukraine erupted between government forces and pro-Russia fighters demanding greater autonomy following the overthrow of the country’s former President Viktor Yanukovych in February 2014.