In a speech marking the 20th anniversary of the 9/11 attacks, Bush said the US has seen “growing evidence that the dangers to our country can come not only across borders, but from violence that gathers within.”

“There is little cultural overlap between violent extremists abroad and violent extremists at home,” Bush said. “But in their disdain for pluralism, in their disregard for human life, in their determination to defile national symbols, they are children of the same foul spirit.”

“And it is our continuing duty to confront them,” he added.

Bush’s speech at the Flight 93 Memorial in Shanksville, Pennsylvania, came eight months after violent insurrectionists breached the US Capitol on January 6 in an attempt to stop Congress from certifying the 2020 election for President Joe Biden.