In January 2017, we will have a new President. He or she will likely encounter an Iran on the verge of acquiring nuclear weapons. If President Obama has implemented his bad deal-if he has unraveled the international consensus in favor of strict sanctions on Iran-then sanctions will in all likelihood be impossible to re-impose. Doing so would take months or years {if at all}, probably too far out to prevent a nuclear Iran. Thus
In January 2017, the United States will welcome a new President who is likely to face the critical issue of a nuclear-armed Iran. The actions taken by President Obama regarding the Iran deal will significantly affect the international stance on sanctions. If the deal has weakened the consensus around these strict sanctions, reinstating them could be extremely difficult and time-consuming, possibly giving Iran enough time to develop nuclear capabilities.
This impending scenario underlines the urgency and consequences of diplomatic decisions related to Iran. According to Ted Cruz's book, the potential inability to re-establish sanctions after they have been relaxed could leave the U.S. and its allies with limited options to contain Iran's nuclear ambitions, creating a serious threat to global security.