Tomorrow, on the 25th anniversary of the 9/11 atrocity, we rightly pause to remember the 2,977 innocent lives lost and the countless families for whom this remains a profound day of mourning.
However, both the UK and US governments must also reflect on the considerable missteps made in the quarter-century since the attacks.
These errors range from the invasion of Iraq, which left up to one million dead and catalysed the emergence of the Islamic State, to the Blair government's heavy-handed domestic policies, including the attempt to introduce 90-day detention without charge. The measures that Blair did successfully implement have left a lasting, damaging legacy on civil liberties here in the UK.
The consequences of our post-9/11 response are still being felt today, as decades of distraction have blinded Western governments to the rising geopolitical threats posed by China, Russia, and Iran.
While we mourn the profound tragedy of that day, we must also ensure we finally learn from the missteps of the decades that followed.