The dollar index rose to 100.3, its highest level in almost three months, extending last week’s gain of nearly 1.1% as the greenback benefited from a more hawkish Federal Reserve stance. The central bank increased the federal funds rate by 25 basis points last week and is expected to raise it again by year-end. Chicago Fed President Goolsbee said inflation could resume falling toward the 2% target but cautioned that rates may need to rise if that does not happen. Minneapolis Fed President Kashkari said inflation remains too high across all economic sectors, rather than being driven only by oil prices. Oil fell for a fourth straight session amid hopes that diplomacy could resolve the conflict with Iran, while the dollar strengthened broadly against the yen, euro and pound.