Let’s play make-believe for a minute.
Pick a random country half way around the world; it’s not important who, exactly, but let’s just say Mongolia for the sake of argument. Now imagine that Mongolia has very poor relations with the United States, would like to see it’s government toppled, and influence the U.S. toward installing a more Mongolian-style government.
In order to accomplish this goal, Mongolia has started a program to arm, train and advise anti-government insurgents in the United States. Thanks to its good relations with Mexico, Mongolia has managed to traffic arms and troops across the southern border and set up bases for the rebel groups it supports in the desert of New Mexico. The anti-US rebels, with Mongolian special forces embedded among them in an advisory role, begin to carry out attacks against American troops and law enforcement. Eventually their area of control expands until the insurgents are occupying a significant amount of territory within the borders of the United States, from which they continue to attack Americans.
Eventually the U.S. government gets tired of this and launches a counter-attack against the insurgents. Thinking it would be a simple stand-up fight, the American troops are caught off guard when Mongolia launches air raids from bases in Mexico and repels the U.S. assault, killing scores of American soldiers in the process.
Mongolia then announces to the media that it has acted in self-defense, and that the Americans were being aggressive and provocative for attacking Mongolia’s special forces and it’s allies (on U.S. soil).
Would you believe that the US is the aggressor in this scenario? Would you agree that Mongolia acted in self-defense?
No fucking way.
Anyone in their right mind would reason that 1) Mongolia was openly acting in an attempt to overthrow the U.S. Government, 2) their special forces and proxies were occupying U.S. territory, and 3) the U.S. military was responding to attacks upon Americans and defending the sovereignty of the United States; therefore, the Mongolians were the aggressors and it was the U.S. that was acting in self-defense.
Now let’s switch things up. Suppose the actions are the same, but change “United States” to “Syria” and change “Mongolia” to “United States”.
So I ask again: why does the American (and Turkish, and Israeli, etc.) military get to invade Syria, train and arm rebels who aim to overthrow the government, carry out attacks on the Syrian army, occupy swathes of Syria and say that they’re off-limits to the country’s own government…and then claim self-defense when government forces respond to defend their sovereignty? It’s completely illogical and, frankly, fucking ridiculous.
The American military has no right to be in Syria.
It has no right to “defend” itself against the Syrian government, in Syria.
Invaders and occupiers do not have the right to claim “self-defense”.
The only reason ISIS even exists is that the U.S. and other anti-Syrian governments stoked an insurgency that could weaken the government’s authority, but was too weak to exercise any authority of its own, thus creating a power vacuum. Want ISIS to stay defeated? Leave Syria and let its government reassert its control over the country.