TEHRAN, Young Journalists Club (YJC) - "The legitimate authorities of Venezuela have already labeled these sanctions illegal. We can wholly support this point of view," Kremlin spokesman Dmitry Peskov told journalists.
The measures against the state-owned PDVSA company were introduced to "change behavior" at the ruling government, according to the US Treasury. Washington last week recognized opposition leader Juan Guaido as a legitimate interim president and called on Maduro to step down.
Peskov called the sanctions an "overt intervention in Venezuela's domestic affairs" and a case of "illegal competition".
He added that Russia will strive to protect its interests "within the framework of international law".
Russian Foreign Minister Sergei Lavrov said that the new sanctions "violate all possible international norms" and show a course toward regime change in embattled Venezuela.
"The US has... publicly taken a course toward illegal regime change," he said Tuesday.
Russia will "do everything to support the legitimate government of president Maduro," he said at a press conference.