This weekend marks the 10th anniversary since Osama Bin Laden, the mastermind of the September 11, 2001, attacks on the United States, was killed by US special-operations forces, Seal Team 6, inside his high-walled compound in the Pakistani military college city of Abbottabad.

His name and that of his terrorist network, al Qaeda, came to define an era of US reaction and retribution dwarfing any previous counter-terrorism policy.

America's "war on terror" is about to enter a new phase as President Joe Biden prepares to withdraw all US forces from Afghanistan by the 20th anniversary of 9/11, but now al Qaeda claims its war with America is far from over.

In an exclusive interview with CNN conducted through intermediaries, an al Qaeda official tells CNN that "war against the US will be continuing on all other fronts unless they are expelled from the rest of the Islamic world."

In the past al Qaeda has rarely responded to questions, choosing instead to hide behind its own self-serving propaganda, dodging even the most distant scrutiny. It's unclear why the group has chosen to do so now.