State of the Union: Obama urges US Iran diplomacy

US President Barack Obama has vowed to veto any new sanctions against Iran if they threaten ongoing talks over the country's nuclear program.

The president said in his annual State of the Union address that US diplomacy had brought Iran to the negotiation table and prevented it from obtaining a nuclear weapon.

"If Congress sends me a new sanctions bill now that threatens to derail these talks, I will veto it," he said.