Should marijuana be legalized? We'll look at both sides of the debate tonight on 360°.

Maureen Miller

AC360° Writer

All this week we'll look at the battle over legalizing marijuana. Tonight, we focus on the medical angle, in part through the eyes of award-winning singer/songwriter Melissa Etheridge. She used medical marijuana during her battle against breast cancer.

Currently, medical marijuana is available in 13 states (we'll show which ones during the program). Do you think it should be an option nationwide? Sound off below.

We'll also have the latest from Iran where a protest over Friday's presidential election turned deadly today. There are reports at least one person was killed while marching against the re-election of Pres. Mahmoud Ahmadinejad.

They protesters are supporters of his leading opponent, moderate Mir Hossein Moussavi. They say the election was stolen from him.

Here's what makes this story so important: these are the largest anti-government protests in Iran since the revolution 30 years ago.

Join us for these stories and much more starting at the top of the hour. See you then!