The British occupied Persian lands during WWI, confiscating food, pack animals, breaking supply chains, spreading disease. Between 2 and 8 million Persians died. In 1918 the U.S. refused a $2 million famine relief loan.
Persian Famine
Famine exacerbated by British occupation, requisition, drought

The daily sheep kill at Bijar. A small party of starving men and women fighting for the entrails. 1914-1918. Source: Australian War Memorial.