A deal between Moscow and Washington over exports of Russian diesel and fresh U.S. criticism of Ukrainian President Volodymyr Zelenskyy mark important political victories for the Kremlin. While the size of Russia’s diesel exports are relatively small and unlikely to significantly impact prices, the revenue will help Moscow replenish its war coffers. More importantly, it will undermine efforts by Kyiv and its European allies to put up a united front to President Vladimir Putin. Remarks by President Donald Trump suggesting that Ukraine should get a new leader to replace Zelenskyy also strengthens the Kremlin’s hand at a critical junction of the 4 1/2-year-old war.