MOSCOW - Russia, China, Iran, Syria and Cuba have come down on one side. The United States, Canada, and countries in Western Europe are on the other.

As the crisis in Venezuela reaches a new boiling point — with embattled Venezuelan President Nicolas Maduro facing a challenge from opposition leader Juan Guaido — the geopolitical fault lines look familiar.

Venezuela Crisis: Familiar Geopolitical Sides Take Shape

President Donald Trump, Vice President Mike Pence and Secretary of State Mike Pompeo issued statements Wednesday proclaiming U.S. recognition of Guaido, saying the U.S. would take all diplomatic and economic measures necessary to support a transition to a new government. Canada said it was recognizing Guaido as the interim president, and British Foreign Secretary Jeremy Hunt called him “the right person” to take Venezuela forward.

Venezuela Crisis: Familiar Geopolitical Sides Take Shape

But Washington's adversaries are issuing warnings against U.S. intervention. Russian officials have called the move a “coup” orchestrated by the U.S.

Venezuela Crisis: Familiar Geopolitical Sides Take Shape

The U.S. and Russia already are at odds over Syria's civil war, and the Venezuelan crisis has the potential to add further strain. Russian-U.S. ties have sunk to post-Cold War lows over Moscow's support of separatists in Ukraine and allegations of Russian meddling in the 2016 U.S. election.

“We view the attempt to usurp power in Venezuela as something that contradicts and violates the foundations and principles of international law,” said Kremlin spokesman Dmitry Peskov.

In a phone call with Maduro, President Vladimir Putin expressed support, noting that “destructive foreign interference tramples on basic norms of the international law,” and called for a peaceful dialogue, according to the Kremlin.

Venezuela's status as a major oil producer — it has the world's largest underground oil reserves, but crude production continues to crash — means its political instability has deep implications globally.

And Russia has taken a special interest. Last month, Russia sent two Tu-160 nuclear-capable bombers to Venezuela for several days in what was seen as a precursor for a possible long-term military presence.

Pompeo criticized the move at the time as “two corrupt governments squandering public funds and squelching liberty and freedom while their people suffer. Peskov dismissed the comment as “undiplomatic” and “inappropriate,” saying that half of the U.S. military budget “would be enough to feed the whole of Africa.”

Russia's Foreign Ministry said Thursday the crisis now “has reached a dangerous point” and urged the international community to mediate between the government and the opposition.

Russian Prime Minister Dmitry Medvedev even injected some domestic U.S. politics into the equation, citing the partial government shutdown and the differences between Trump and House Speaker Nancy Pelosi.

“Let's imagine, just for an instant, how the American people would respond, for example, to the speaker of the U.S. House of Representatives declaring herself the new president against the backdrop of the budget crisis and government shutdown,” Medvedev said on Facebook. “What would be the reaction from the current U.S. president, especially if this move was supported by the leadership of another country, for example, Russia?”

Russia frequently decries popular uprisings like the “color revolutions” that have taken place in Ukraine, Georgia and other countries in its former sphere of influence.

China's Foreign Ministry also sternly urged against interference by Washington in Venezuela. Beijing's allies, including Iran and Syria, followed suit.

China “opposes external intervention in Venezuela,” Foreign Ministry spokeswoman Hua Chunying said. “We hope that Venezuela and the United States can respect and treat each other on an equal footing, and deal with their relations based on non-interference in each other's internal affairs.”

In the last decade, China has given Venezuela $65 billion in loans, cash and investment. Venezuela owes it more than $20 billion. China's only hope of being repaid appears to lie in Venezuela ramping up oil production, although low oil prices and the country's crashing economy appear to bode poorly for such an outcome.

The Russian state-controlled oil company Rosneft has invested heavily in Venezuela, and its chief executive, Igor Sechin, visited Caracas in November, pressuring the Maduro government to make good on its commitments to his company. Russia, a major oil producer itself, has been buying oil from the state-run Venezuelan company PDVSA, and Sechin reportedly went to Caracas to raise concerns about Venezuela halting oil supplies.