Running out of options to bolster public finances, Russia more than doubled domestic borrowing in 2020, raised some taxes and increased state spending as it relaxed a budget rule that shields the economy from external shocks.
"It's unfortunate that it has taken over three weeks after the revelation of an intrusion this significant for this Administration to finally issue a tentative attribution," said Senator Mark Warner, vice chairman of the Senate Intelligence committee.
The Russian market will have one eye on Thursday on Putin fielding questions from the media, an annual event, which can last for several hours and is due to begin at 1200 (0900 GMT) in Moscow.
The French and American heads of the Minsk Group, which led talks on the conflict for decades but failed to achieve a lasting agreement, met with Azeri President Ilham Aliyev in Baku on Saturday.
The Russian-made vaccine will first be made available to doctors and other medical workers, teachers and social workers because they run the highest risk of exposure to the disease.
*President Vladimir Putin has ordered a nationwide voluntary vaccination programme to begin next week. He said Russia will have produced 2 million vaccine doses within the next few days.
Moscow, the epicentre of Russia's coronavirus outbreak, registered 7,993 new cases overnight, up from 6,868 a day before and well above the daily tallies of around 700 seen in early September.