Trump's first big test with Putin harkens back to one of the most controversial elements of his campaign
Donald Trump
Donald Trump

(President Donald Trump.AP)

Nikki Haley, the new US ambassador to the United Nations, took her first turn at the UN Security Council on Thursday and issued a familiar ring directed at Russia.

She was speaking at an emergency meeting of the council about a sudden uptick in violence in eastern Ukraine, amid more than two-year long battles in the region between Ukrainian fighters and Russian-backed separatists.

It is still unclear who reignited the violence around the eastern Ukrainian city of Avdiivka last weekend, but Haley declared that "this crisis will continue" until "Russia and the separatists it supports respect Ukraine’s sovereignty and territorial integrity."

She issued a "clear and strong condemnation of Russian actions" there. And she said the US continues to condemn and call on Russia to return the peninsula of Crimea to Ukraine.

Haley's statement amounted to a stark departure from the Trump administration's rhetoric toward Russia. The Russian aggression has so far been met with silence by President Donald Trump, who has throughout his presidential campaign mused about restoring friendly relations with the nation.

White House press secretary Sean Spicer said earlier this week that Trump was "being kept aware" of the developments in Ukraine and that the White House would "have further updates as we go on."

That Trump has demurred from commenting on the Ukraine violence — even as he risked igniting diplomatic crises with Mexico and Australia last weekend over a border wall and a refugee agreement — likely reflects Trump's desire to nurture his warming relationship with Russian President Vladimir Putin.

But that relationship will be tested as the violence escalates and calls grow from within his own party to provide Ukraine with lethal weapons to fend off Russian aggression.

A shift in tone

In a statement from Belarus on Thursday, Putin seemed to appeal directly to Trump when he said that Ukraine was only accusing Russia of reigniting violence because Kiev supported Democratic nominee Hillary Clinton in the US presidential election and now needed to "present itself as a victim of aggression" to gain sympathy from Trump.

In the early stages of his presidential campaign, Trump appeared sympathetic to Kiev's battle against separatists armed and funded by Moscow. He even traveled to Ukraine in September 2015 to speak at the Yalta European Strategy Annual Meeting, where he said President Barack Obama "is not doing what he should be doing for the Ukraine," and condemned Europe for not "leading some of the charge" against Russia's aggression.