After the miserably failed terrorist attack that NATO-Zionist Axis carried out in the capital of Qatar (a gas station with a dictator who thinks buying weapons from US and having the largest US military base there protects them) the US regime needed a distraction from that failure as the criticism of Trump was growing.
This is why the Axis carried out this public elimination of one of its disposable assets as a distraction...
It's also two birds with one stone. In the near future the US regime will use this public execution (carried out by the regime itself) as an excuse to attack supporters of Palestine who have been protesting against the ongoing genocide that US regime is carrying out in Gaza...