Jane Araf

The indirect talks through Omani mediators focus on Iran's nuclear program.

Iran says it's for peaceful purposes.

The U.S.

accuses it of building a bomb.

And while Iran says it will discuss only uranium enrichment, the U.S.

says talks should include Iran's ballistic missile program, support for armed groups in the

and a crackdown on Iranian protesters.

This is the first meeting scheduled since the United States struck Iranian nuclear targets last June after an Israeli bombing campaign.

Those talks were cancelled after the attack.

Iran has warned that if the U.S.

attacks again, it could spark regional war.

Jane Araf, NPR News, Amman.

Iran says it is ready for negotiations on its nuclear program if they are, quote, fair.

It says the program is for non-military purposes, while the United States accuses it of building nuclear weapons.

The U.S.

has sent more warships to the region to back its threats against Iran.

On Sunday, Iran's Supreme Leader Ayatollah Ali Khamenei warned that the Americans should know if they start a war, this time it will be a regional war.

Turkey and other U.S.

allies have been urging the U.S.

not to attack Iran.