CNN's Erin Burnett reports from Tehran as Iranians prepare to elect a new president. Burnett also reveals how things have changed since the last presidential election, the country's nuclear ambition and the impact of United States sanctions on Iranian citizens.

Clips from her coverage are below:

Erin Burnett on her trip to Iran

Revolutionary Guard's far-reaching power

Woman voters see flicker of hope in Iran

Iran goes to the polls

Candidates embrace social media in Iran

Why Iran is making sure the 2013 elections won't be like 2009's

Are U.S. sanctions against Iran working?

What's at stake in Iran's Election

Who is Iran's Supreme Leader Ayatollah Ali Khamenei?

Iran's presidential candidates

Erin Burnett previews Iran elections