Reliance Industries is likely to shift back to its traditional Middle Eastern sources for oil if India yields to pressure from U.S. President Donald Trump to cut Russian imports, trade sources said.

Indian refiners, the world's biggest user of Russian oil, can operate without supplies from Moscow from a technical standpoint, but the shift would involve major economic and strategic trade-offs, analysts said.

For decades, the world has looked to the Middle East as the heart of global oil production,a region synonymous with vast reserves, desert landscapes, and unimaginable wealth. But one question continues to stir debate among economists,