More than half the Arctic's coastline is Russian territory and in the last six years Moscow has built more than 475 military ...

Sweden officially joined NATO on Thursday, becoming its 32nd member. Why it matters: The nordic nation's accession to the alliance marks another major blow to Russian President Vladimir Putin ...

The blue on the map shows NATO's core, which is structured around the organization's 28 member states. This number will soon expand to 29, as Montenegro is undergoing accessions talks.