State news agency RIA quoting the Kremlin

Reuters reporting. No further detail

Update:

  • headline comment made by President Putin’s spokesman Dmitry Peskov
  • says scope of further sanctions would depend on the type of measures that Western nations may adopt in the future

Various options are being worked out. We have repeatedly said that Russia is not an advocate of the sanctions rhetoric and did not initiate it. But in the event that our partners continue the unconstructive and even destructive practices additional measures are being worked out