Russia has warned Lithuania of "serious" consequences after it banned some goods to the Russian territory of Kaliningrad.
Kaliningrad - a strategic region where Russia's Baltic Fleet is headquartered - has no border with mainland Russia.
Russia's senior security official Nikolai Patrushev said Moscow will certainly respond to such hostile actions.

A British subsidiary of the mining company Glencore has pleaded guilty in a UK court to corruption offences, after being accused of paying millions of dollars in bribes to secure access to crude oil in Africa.