Russian President Vladimir Putin on Friday gathered his security cabinet to discuss the US response to Moscow's security demands concerning Nato, Kremlin spokesman Dmitry Peskov has said.

Peskov provided no further details about the meeting.

On Thursday, Russia's foreign ministry said Washington "did not give a constructive answer" to the Russian demands, threatening "military-technical" measures.

What that means is unclear, but they might include imposing restraints on Ukraine, such as a no-fly zone or a blockade of Ukrainian ports, or moving nuclear weapons to neighbouring Belarus.

(Source: BBC)