This is what I use to tell Obama: "If Iran has Nukes, the chances of a nuclear war would increase dramatically!"

"... According to Ross, should Iran manage to obtain nuclear weapons, the chances of a nuclear war would increase dramatically. He continued to say that while the White House would like to see a regime change in Iran, it is currently focusing on ways to stop Iran's nuclear program. 

Addressing Washington's opposition to an immediate embargo on Iranian oil, Ross explained that the US prefers to operate in a gradual manner in order to avoid a sharp increase in the price of oil. Ross said such a price hike would hurt the world's economy, adding that the Obama Administration hopes that as a first step the Europeans would begin importing Libyan and Iraqi oil instead of Iranian oil. Such a development, according to Ross, would not lead to an increase in the price of oil. 

The US and France agree that it is important to diminish Iran's ability to influence the price of oil before imposing an oil embargo, Ross stated...."