A Turkish news channel is streaming but the anchorwoman speaks Arabic. Turkey's official language isn't Arabic, it's Turkish. They are completely different languages.
at 39:28 min an American Curve left sign is shown, not used in France.
Creech AFB in Nevada has MQ-9 Reapers and RQ-170 Sentientals Drones. While looking at the front of the building, a B-52 Bomber is moving on the ramp to the left. Creech AFB does not have B-52 Bombers.
On S01E05 at 23:23 on the short flashback in Paris 2001 the background shows a silver Alfa Romeo 156 face-lift model designed by Giugaro. This is wrong because that model (face-lift disegno Giugaro) came out in markets in 2003 but the flashback refers to the year 2001.
The muzzle of the rifle being used by the French DGSI sniper in the snow clearly shows that it is a prop gun, as the barrel is plugged just a few inches in.
When the van, driven by the Chechen, is heading towards Chamonix, the road is obviously North American. French roads do not have double yellow lines (or any central yellow lines at all for that matter). Furthermore, when the camera pans out an American 'left curve' sign is visible. The French have International type road signs meaning this would be a left pointing arrow on a red-bordered white triangle.
Dudayev is said to be a veteran of the "Soviet-Chechen" War. However, there was no Soviet-Chechen War, but two Russian-Chechen wars that took place after the collapse of the Soviet Union in 1991.