KYIV, Nov 15 - Ukraine is warning that its border with Russia is "seriously deteriorating," and the county will speed up construction of a naval base amid concerns of an invasion from Russia, Politico reported.

"What we see along our border is a sophisticated military infrastructure rolled out during the spring escalation, that is ready to be used for offensive operations against Ukraine," Ukrainian Foreign Minister Dmytro Kuleba told Politico Brussels Playbook on Monday. "I cannot speculate on the exact scale of those operations, but back in 2014 it was unimaginable that Crimea would be seized by Russia — therefore I cannot exclude any scenario at this point." He described Ukraine’s border as "seriously deteriorating."