As Washington rallies the international community against Russian aggression in Ukraine, conflict has broken out back home between traditional Republicans determined to defend democracy overseas and an isolationist base asking why America should take sides at all.

Tensions between the United States and Russia have escalated as Moscow has amassed an estimated 100,000 troops near its border with Ukraine, leading to fears that it is preparing a new military assault after its invasion of Crimea in 2014.

The usual conservative voices advocating a tough US response have come as expected, but a pro-Russian stance taken by a large section of former president Donald Trump's support base has unsettled many observers.

Republicans in the House of Representatives and on the campaign trail have been breaking with conservative orthodoxy to complain loudly that the United States should have no role in the crisis.

"Ukraine is over 5,000 miles away. Dangerous drugs and violent crime are crossing my constituents' backyards," Arizona's far right lawmaker Paul Gosar tweeted this week.

Fox News host Tucker Carlson
Fox News host Tucker Carlson, pictured in 2019, has suggested that the United States should be supporting Russia over Ukraine Photo: GETTY IMAGES NORTH AMERICA via AFP / CHIP SOMODEVILLA

The post was among more than a dozen public statements identified by news website Axios from House Republicans challenging the notion that America has any business getting involved in the standoff.

High-profile Washington Republicans -- including the party's Senate leadership -- have backed the country's longstanding support for Kyiv's sovereignty.

But it is a different story among the grassroots, where hopefuls in the upcoming midterm elections are rejecting the internationalist rhetoric that once defined Reagan-Bush Republicanism.

Analysts believe the party's internal conflict has been fueled in part by the unpopular war in Iraq and botched withdrawal from Afghanistan.

Vladimir Putin, Donald Trump
Former US president Donald Trump (right) lionized Vladimir Putin as a "highly respected" leader Photo: AFP / Brendan Smialowski

But it also reflects a pro-Russia sentiment that took root under Trump, who lionized Vladimir Putin as a "highly respected" leader and publicly sided with the former KGB spy over the US government.

"The Swamp will send troops to fight an invasion of Ukraine. They won't send troops to stop the invasion of the US because they're the ones facilitating it," Trump's spokeswoman Liz Harrington said on Thursday.

The talking point has been tried out in Ohio's Senate race, where Republican primary candidate J.D. Vance and his opponent Bernie Moreno have accused the Biden administration of being more concerned about Ukraine's borders than America's southern frontier.

"You hate America unless you want to send our best to die in a war that has nothing to do with this country? Give me a break," Vance, a venture capitalist and bestselling author, tweeted Wednesday.

The right also appears to have been moved by the steady stream of rhetoric echoing Kremlin talking points that has been served up by top-rated Fox News host Tucker Carlson.

Ukrainian military
An Ukrainian Military Forces serviceman walks along a snow covered trench on the frontline with the Russia-backed separatists near Zolote village, in the eastern Lugansk region, on January 21, 2022 Photo: AFP / Anatolii STEPANOV

One of the most influential voices in right-wing media, Carlson's provocative screeds have been broadcast approvingly by Russian state TV.

The anchor has suggested that the United States should be supporting energy-rich Russia over its pro-Western neighbor, ignoring the security assurances that Washington gave Kyiv when the former Soviet republic gave up its nuclear arsenal.

"Why is it disloyal to side with Russia but loyal to side with Ukraine?" Carlson asked his viewers on Monday.

"They're both foreign countries that don't care anything about the United States. Kind of strange."

Tom Malinowski, a Democratic congressman from New Jersey, tweeted that he had seen an uptick in calls to his office from Carlson viewers "upset that we're not siding with Russia."

"People get their opinions by watching the news, that's nothing new," Malinowski told The Hill.

"What is new is we have at least one talk show host with a huge captive audience that is not exposed to any counter-programming elsewhere."

Congressman Adam Kinzinger told The Washington Post he saw evidence of the shift in a text message chain with fellow House Republicans who were asking why Biden was being allowed to "provoke Russia."

That is not to say that Republicans on the whole are unsupportive of a tough stance against Moscow's expansionism.

A survey by the Chicago Council on Global Affairs last July showed 51 percent backing among the party faithful for military intervention in the event of an invasion.

But other polls show a trend in the opposite direction, including a Yahoo News/YouGov survey released this week in which 40 percent of Republicans said the United States has no duty to protect Ukraine, against 36 percent who said it does.

Carly Cooperman, a Democratic pollster who has written a book on divisions in US politics, said a significant section of Republican voters now see Putin's Russia as an ally in right-wing nationalism.

"As strong nationalists, these Republicans are anti-NATO and not supportive of Ukraine joining NATO. Russia doesn't want Ukraine to join NATO either, as doing so would make it much more difficult for Russia to act aggressively towards Ukraine," Cooperman told AFP.

"Trump has had a large influence on generating these sentiments as he had been generally warmer toward Russia, and so has Tucker Carlson, who has gone to great lengths to advocate the pro-Russia position on his show."

Fox News did not immediately respond to a request for comment.

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