The Obama administration is working on a substantial sanctions package against Iran in case current diplomatic efforts to curb its nuclear program fail , top officials told Congress earlier this month . Iranian nuclear program : Iran accepts uranium processing draft deal ` ` in principle '' Three rounds of talks on Iran 's nuclear program ended up in Vienna . Iranian representative says draft deal is ` ` balanced approach to the problem '' Tehran insists its nuclear program is for peaceful purposes .
Iranian nuclear program : Iran accepts uranium processing draft deal ` ` in principle '' Three rounds of talks on Iran 's nuclear program ended up in Vienna . Iranian representative says draft deal is ` ` balanced approach to the problem '' Tehran insists its nuclear program is for peaceful purposes .