The U.S.-Ukraine alliance is careening toward a possible breaking point, with Moscow strengthened by President Donald Trump's recent rejection of new Russia sanctions and Kyiv undermined by disruptions in satellite support for its drones during the war.

Trump's relationship with Ukrainian President Volodymyr Zelenskyy has always been a moving target, while the Republican president has frequently boasted of his rapport with Russian leader Vladimir Putin.

But relations between the U.S. and Ukraine appear to be at a new low, threatening to tip the balance of the war to Russia's favor and imperil America's security interests across the globe.