Since the beginning of the spring 2011 protests in Syria, it has been shown that Assad and his supporters have calculated one thing very precisely: the extensive inaction of the international community. Shootings of protesters and deliberate enforced disappearance, which were also used by other dictators in other Arab countries at the beginning of the Arab Spring, had further consequences in addition to vocal criticism. Sanctions, cancellation of military aid, military intervention to protect the civilian population and even a "regime change". Nothing like that in Syria. On the one hand, this was due to effective leverage points on the political and diplomatic stage, and on the other hand, it was also due to misassumptions from other military interventions in the region. Through extensive diplomatic non-engagement, Assad and the rulers in Moscow and Tehran supporting him were suggested, that Europe and the United States did not want to see regional or even global showdowns because of another Arab uprising. With fatal consequences.
Tanks as a symbol of murderous destruction.
He does not have to fear threats, he responds to every broken norm with a further escalation. The red lines shown exist in this conflict, that's right. However, they have not been and are not drawn by democratic states in the confrontation with the Syrian regime. Rather, it is Assad who draws red lines with the blood of hundreds of thousands.
It did not follow Assad's rule OR the destruction of the country. Both followed.