Iran was declared a neutrality in world war 1, but ended up as a battleground for the Russians, Turkish, and British.
A military commander named Reza Khan took over and declared himself Shah of Persia, which is what Iran was back then.
Khan's rule was cut when he was deposed in favor of his son, Mohammed. Shah's pro-Axis alignment during word war 2 sparked Russian occupation.
Ali Razmara became prime minister, then assassinated 9 months later, succeded by Mohammed Mossadeq.
The Shah launched the "White Revolution", a campaign to modernize, westernize the country which included land reform, social and economic modernization
Shah's authoritarian rule led to riots, mass demonstrations, strikes, alienation of clergy, martial law was imposed.
The Iranian monarchy was overthrown and replaced with a republic. The Shah and his family were forced into exile.
Following referendum, the Islamic Republic of Iran was proclaimed
52 Americans taken hostage inside U.S. embassy in Tehran by Islamic militants
Following 14 years of exile, Islamic fundamentalist Ayatollah Khomenini returned to Iran.
Iran-Iraq War began
After 444 days in captivity, American hostages were released.
Iran accepted ceasefire agreement with Iraq under the guidance of the UN.
Following death of Ayatollah Khomeini, President Khamene'i appointed as new supreme leader
Construction of Iran's first nuclear reactor began by Russian technicians, U.S. strongly objected
IAEA reported Iran could develop a nuclear weapon in three to eight years; Iran allowed inspectors to visit the Arak nuclear plant; US intelligence report played down the perceived nuclear threat posed by Iran.
Rial (Iran's currency) lost about 80% of its value due to international sanctions.
Iran and six world powers agreed on timetable and framework for negotiating agreement about nuclear programs.
Concerns began that nuclear talks with Iran could falter due to escalating animosity between U.S. and Russia over Ukraine crisis