He told Estonian public radio that the Raju's task was "to ensure that nothing happens there and that our critical connection with Finland remains operational".
The Kremlin has declined to comment on the damage to the cable, describing it as a "very narrow issue" and not an issue for the Russian presidency.
Nato Secretary General Mark Rutte said on social media that he had spoken to Finland's president, Alexander Stubb, adding that NATO would boost its presence in the Baltic.
A further statement by the alliance said only that "Nato remains vigilant and is working to provide further support".
Finland and Estonia are both Nato members and Estonian Prime Minister Kristen Michal told public TV that, if necessary, they would invoke Article 4 of the Nato Treaty, which involves consultation if any member state feels threatened.
"Our wish would be to receive reinforcements from Nato in the form of a fleet to act as a deterrent," he was quoted as saying by news agency BNS.
The Kremlin has declined to comment on the damage to the cable, describing it as a "very narrow issue" and not an issue for the Russian presidency.
Nato Secretary General Mark Rutte said on social media that he had spoken to Finland's president, Alexander Stubb, adding that NATO would boost its presence in the Baltic.
A further statement by the alliance said only that "Nato remains vigilant and is working to provide further support".
Finland and Estonia are both Nato members and Estonian Prime Minister Kristen Michal told public TV that, if necessary, they would invoke Article 4 of the Nato Treaty, which involves consultation if any member state feels threatened.
"Our wish would be to receive reinforcements from Nato in the form of a fleet to act as a deterrent," he was quoted as saying by news agency BNS.