Economy Minister Alexei Ulyukayev told a Russian paper: "When a U.S. law is passed it is very hard to change it afterwards."
The ruble crisis is overstated, says Russian state-owned media. Kremlin-critical outlets, however, are piling on and linking the crisis to Ukraine.
Russia has so far spent about $80 billion -- a fifth of its international reserves -- in an unsuccessful move to stabilize the ruble.
The sanctions, in response to Russia’s attacks on the Ukraine, were enacted Tuesday and are expected to arrive by the end of the week
Most Russians aren't exposed to the economic woes stemming from the ruble's collapse, but some say they are hit hard.
Apple has shut off sales in Russia as the country's currency hits historic lows.
The Russian currency is in serious trouble, and so is the nation's economy, but the president is unlikely to back off.
The country with the most journalist murders was Syria, followed by Palestine and Ukraine.
The exercises featuring 9,000 soldiers and more than 55 naval ships were aimed at testing the military's combat readiness in Kaliningrad.
Russian marines may have boarded the warship that France doesn't want to deliver to Russia.
A "day of silence" has prevented civilian casualties since Dec. 9, but a new U.N. report shows that a September ceasefire has largely failed.
UN report also highlights systematic human rights violations on the Crimean peninsula, annexed by Russia from Ukraine in March.
Dmitry Medvedev's comments, in an article published Monday, coincided with a visit to Brussels by Ukrainian Prime Minister Arseny Yatseniuk.
U.S. lawmakers passed a bill Thursday which would impose new sanctions on Russian weapons companies in other investors.
Ukrainian President Petro Poroshenko said India was placing more importance on "money" than "values" by welcoming Crimean leader.
Russian military in the Baltic Sea area has been called "considerable," but the nation claims it's only testing NATO defenses.
News of the operation comes amid growing tensions between Western powers and Russia over its role in the Ukraine crisis.
The "cromnibus" spending bill produced with bipartisan support includes money to fight ISIS and Ebola, and prohibits spending on abortion.
If the breakaway regions of Donetsk and Luhansk are looking to Moscow for financial support, they may be disappointed.
Beijing has reportedly sent an official to a conference of nuclear powers in Vienna, despite declining to participate in the event.
The Boeing 777 came down in eastern Ukraine on July 17, killing all 298 people on board, two-thirds of them Dutch..
If it holds, it could improve prospects for a renewal of peace talks in the Belarussian capital Minsk later this week.