MOSCOW (Reuters) – Russia’s finance ministry has significantly cut expectations of taxable oil production for 2023, according to the draft budget for the next three years, in the expectation Western sanctions will mean an overall decline in output and refining volumes. Selling oil and gas has been one of the main sources for Russian foreign currency earnings since Soviet geologists found reserves in the swamps of Siberia in the decades after World War Two. The draft budget anticipates Russian oil and gas condensate output at 490 million tonnes in 2023 (9.84 million barrels per day (bpd), a 7%-…