WASHINGTON/NEW DELHI - India has halved its purchases of Russian oil, a White House official said, but Indian sources said no immediate reduction had been seen, as President Donald Trump's administration presses New Delhi and other nations to buy less Russian crude.

Russian oil is a main irritant for Trump in prolonged trade talks with India - half of his 50% tariffs on Indian goods are in retaliation for those purchases. His administration says Moscow is using petroleum revenue to fund its war in Ukraine.