"Don't play with fire, or you will regret."
"You impose sanctions on major producers ... and yet you are asking them to reduce the prices?"
Although Russia's elite may be holding onto their wealth despite U.S.-led efforts to target the economy, the working class and poorer communities may not be faring so well.
Meanwhile, Russia's Ministry of Economic Development has put forward amendments to federal law that would allow companies to hide information about some public contracts.
The U.S. government added three Russians and five companies said to be linked to Moscow's security forces.
"North Korea can build nukes and ICBMs, but claim they are too poor to pay for foreign travel costs," a Korea expert said.
Russia's Putin has visited China at least once a year since relations with the West collapsed over his annexation of Crimea in 2014.
Russian President Vladimir Putin said that without "trust," Moscow and Washington may resort to "force," and "this might lead to tragedy."
"He made us realize that if you need a helping hand, you will find one at the end of your arm," wrote Donald Tusk, president of the European Council.
U.S. Secretary of State Mike Pompeo said the Trump administration was open to lifting sanctions and allowing private American investments into the reclusive state.
Sanctions, a wobbling ruble and trade embargoes mean that hundreds of McDonald's restaurants in Russia are looking for a new source for their potatoes.
Forbes 2018 Rich List for Russia shows the wealthy elite nearly as rich as before Crimea sanctions.
The company denies wrongdoing.
China's defense and foreign ministers visited Moscow this week as Trump's relationship with Beijing and Moscow deteriorates.
The value of the gifts exceeds the limit allowed under U.N. sanctions.
At least 20 countries have kicked out more than 130 Russian diplomats, believed to be covert intelligence officers.
The U.S., Germany, France, other EU countries and Ukraine have all announced they are expelling Russian diplomats.
Four countries bordering Russia reportedly called in Moscow's top diplomats on their territory as the EU decided its response to spy poisoning scandal.
The state-controlled news agency commentary is the first official acknowledgement of a thawing in relations with the U.S.
The order applies to any American citizen or individuals living in the U.S.