Ukraine's Foreign Minister Dmytro Kuleba said Sunday that Russia has not responded to his request for an urgent meeting with Russia to discuss Moscow's concentration of troops and military equipment near Ukraine and inside annexed Crimea.

Kiev's document was addressed on Friday through the Organization for Security and Cooperation in Europe (OSCE) demanding that Russia explain its activities. Ukraine now demands a meeting with Russia within 48 hours, according to Dmytro Kuleba.

Kuleba's statements came ahead of renewed diplomatic efforts aimed at preventing a feared Russian invasion, with German Chancellor Olaf Scholz arriving in the Ukrainian capital today for talks on the crisis with President Volodymyr Zelenskyy.

In other developments in the military tensions, the finance ministers of the G7 group of major Western economies warned Russia that it will face "massive" economic consequences if it invades Ukraine and promised to support the latter's economy in the event of any attack.

"We, the G7 finance ministers, emphasize our readiness to act quickly and decisively to support the Ukrainian economy," they wrote in a joint statement.

"Any further military aggression by Russia against Ukraine will be met with a swift, coordinated and forceful response," the ministers added, warning Moscow of "economic and financial sanctions that will have massive and immediate consequences on the Russian economy."

The G7 is made up of Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States.

On the other hand, the Russian government has decided not to send a representative to this year's Munich Security Conference, according to the event's chairman, Wolfgang Ischinger.

The conference, known as "Davos for defense," begins on Friday and will bring together the world's defense and security elite.