Russia's foreign ministry reacted to a fresh wave of European Union sanctions on Monday by saying any unfriendly Western actions would be met with "the necessary response".
The ministry called the sanctions illegal and said in a statement it had "significantly" expanded its black list of people barred from entering Russia. It provided no further details.
Earlier, EU countries adopted a 14th package of sanctions on Russia that aims to close some loopholes and hits Russia's gas exports for the first time.
