The Trump administration has started to panic about the spiking price of oil.

While senior Trump aides had anticipated some brief surge in oil prices in the first days of the war with Iran, the size and sustainability of the market reaction caught them off guard, people familiar with the internal discussions told CNN.

Now, as oil prices hover near $100 a barrel just over a week into the war and US gas prices are moving sharply higher, it’s prompted a belated rush to try to reassure investors and seek ways to tamp down the impact. But the administration is confronting the limits of its power — and the reality that Donald Trump’s decision to wage war abroad threatens to wipe out some of his key economic accomplishments at home.