Roma was facing a political crisis, many senators and politicians were fighting to see who gains power of Rome and Octavian the son of Caesar become the sole ruler of Rome and saved everyone from more bloodshed. (from the civil war)
We have moved onto constantly redefining Inclusivety of people, and their rights.
Men and Women, Nationality, Race, sex, rights to vote, rights to living how we want.
We may from time to time find ourselves having to defend these rights, but the Republic will endure.
Answer:
The United States and the Islamic Republic of Iran have had no formal diplomatic relationship since that date. Switzerland is the U.S. protecting power and provides limited consular services to U.S. citizens in Iran. Iran has no embassy in Washington, D.C