U.S. President Donald Trump’s popularity has fallen to 36 percent, the lowest since his return to power, according to the latest Reuters/Ipsos poll released on Monday. The four-day survey found that growing dissatisfaction with the Iran war and rising fuel prices have driven down his approval rating from 40 percent the previous week.

The poll also revealed declining public support for U.S. military action against Iran, with only 35 percent in favor and 61 percent opposed. Public sentiment on living costs has worsened as fuel prices surged following the U.S.-led coordinated attack on Iran, which disrupted the Strait of Hormuz. Only 25 percent of respondents approved of Trump’s handling of the situation.

The online survey included 1,272 adult Americans and carried a margin of error of three percentage points, according to Al Jazeera, which cited the poll results.