While the president has vowed to “hunt” those responsible for the attack, the situation in Afghanistan appears to have affected Biden’s already declining approval rating.

Poll tracker FiveThirtyEight, which tracks Biden’s popularity based on analysis of a wide range of polls and its own system of pollster ratings, shows that the president’s approval stood at 47.2 percent on Thursday.

The president’s disapproval now stands at 47 percent and could rise further ahead of the August 31 deadline for the final withdrawal of U.S. forces from Afghanistan.

The most recent poll cited by FiveThirtyEight was conducted by Ipsos between August 25 and August 26, and therefore could not take into account reaction to the attacks in Kabul.

However, FiveThirtyEight analysis includes polls taken since the Taliban seized Kabul on August 15.

These figures represent a notable change in just the past five days. On August 22, FiveThirtyEight analysis showed Biden’s approval at 49.4 percent against disapproval of 46.2 percent.

The Taliban seized the Afghan capital of Kabul on Sunday, August 15, and Biden has faced a torrent of criticism from Republicans including former President Donald Trump, as well as members of his own party for the administration’s handling of the situation.

Biden defended the decision to push ahead with the withdrawal, which was agreed during the Trump administration, and rejected a plea from U.S. allies to extend the deadline beyond August 31.

The president’s approval rating had been relatively stable for the first six months of his presidency but there has been a downward trend since July 27 which appears to have been exacerbated by the Taliban’s rapid takeover of Afghanistan.

In an address to the nation on Thursday, Biden vowed to bring those responsible for the explosions to justice. ISIS-K, a Central Asia affiliate of the Islamic State group (ISIS), has claimed responsibility.

“To those who carried out this attack, as well as anyone who wishes America harm, know this—we will not forgive, We will not forget,” Biden said. “We will hunt you down and make you pay. I will defend our interest in our people with every measure at my command.

“I’ve also ordered my commanders to develop operational plans to strike ISIS-K assets, leadership and facilities. We will respond with force and precision at our time, at the place we choose, in a moment of our choosing.

“Here’s what you need to know—these ISIS terrorists will not win. We will rescue the Americans. We will get our Afghan allies out and our mission will go on,” he said.

Previously, Biden’s approval rating at its lowest point was still higher than Trump’s at its peak. That is no longer the case, however. The former president’s highest approval rating was 47.8 percent on January 25, 2017, based on FiveThirtyEight’s analysis.

Trump blamed Biden for events in Kabul during an interview with Fox News’ Sean Hannity on Thursday.

“Biden came in and [the Taliban] saw a weakness and he didn’t do anything. He didn’t do anything,” Trump said.

“And they took over and then we ran out, just destroyed the image of America, of our great country, of our incredible warriors. They are incredible warriors, but they still need leadership at the top, and they don’t have it,” the former president said.

Update 08/27/21 9.21 a.m. E.T.: This article was updated to include more information about polling data.