New york: Oil is on track for its biggest weekly gain since June after US sanctions on major Russian companies upset the market, raising concerns about supply disruptions and increased demand for alternative crudes. Brent crude fell to nearly $65 a barrel on Friday but remained up about 7% for the week, while West Texas Intermediate crude fell below $62. According to National Iraqi News Agency, flows of Russian crude to India, one of the largest buyers, are expected to decline following the sanctions imposed on Rosneft and Lukoil. The impact on Chinese purchases remains unclear, adding further uncertainty to the market dynamics. US President Donald Trump plans to raise the issue of China's purchases of Russian oil during his meeting with his Chinese counterpart, Xi Jinping, next week.