After leaving office, Yousaf said terminating the power-sharing agreement with the Greens was his mistake, and that he “underestimated” the level of hurt caused by his decision.
During his time in Bute House, the former SNP leader took a significant early stand on the conflict in Gaza by calling for an immediate ceasefire.
His in-laws were trapped in Gaza for four weeks following Israel’s invasion – a period he described as being the most difficult of his life.
In his letter, Yousaf said he hoped he “was able to demonstrate leadership during what I view as the moral question of our time”.
He vowed to continue working hard for his constituents until 2026, and to be a committed campaigner for Scottish independence and the SNP after leaving parliament.