Ukraine pushes back against Kremlin warning on 'red lines' over NATO

Ukraine on Monday hit back after a Kremlin warning that NATO's expansion into Ukraine crossed a red line for Russia, saying it was master of its own decisions on security matters.

Foreign Minister Dmytro Kuleba made the remarks in a tweet after the Kremlin warned that the expansion of NATO military infrastructure in Ukraine crossed a red line for Russian President Vladimir Putin.

"Putin's 'red lines' are limited to Russia's borders," Kuleba said. "On our side of the Ukrainian-Russian border we can figure out ourselves what to do in the interests of the Ukrainian people, as well as Ukraine's and Europe's security."