"A century ago, the map looked much different. There was no Iraq, no Jordan, no Israel, no Lebanon. The Ottoman Empire, stretching from the Balkans to North Africa, enveloped much of the region. Powerful, industrialized European nations with empires of their own — especially Great Britain — had a keen interest in the Middle East.
BritainÂ’s goal was to safeguard the sea route (through the Suez Canal) to India, then a valuable part of its worldwide empire.
To head off the Russian empire’s advances southward, Britain signed a treaty with Russia in 1907 that divided Iran (Persia) into three zones, one British, one Russian, one neutral —
without the Iranian governmentÂ’s knowledge or involvement.
World War I made British ruling circles appreciate the importance of oil supplies. "During the war," writes Mamed Abbasov, "the United States furnished almost 80 percent of Allied oil requirements. Now Britain realized the necessity of ensuring its own permanent reserves." The postwar settlements guaranteed British access to oil in Iraq, Kuwait and the Arabian peninsula; British money and military-backed diplomacy ensured British control over Iran.
British dominance faced competition from U.S. capital, however."