Energy security could enter NATO’s security agenda as one of the main issues just during the
last decade. NATO leaders recognize that the disruption of the flow of vital resources could
affect Alliance security interests. There is no agreement on the definition of energy security
in NATO as it differs based on each country’s needs; however, there is a paragraph in the
NATO concept from 2010 that states the importance of energy security, and in 2012 there was
further agreement that NATO wants to be involved in energy security and energy efficiency
of military forces. This article is focused on the issue and analyses the importance and the
meaning of energy security for NATO in the light of NATO summit declarations and the
various NATO’s strategic concepts.