I am Sa sand, I answer back and forth.
The reason is as follows:
The first, ba Sha Er has particular actual strength.
Actually, the actual strength of Ba Sha Er is very strong.
In initial stage of Syrian civil war, ba Sha Er depends on the powerful army in the hand, crush people uprise to arm to expend just little effort far from.
Cento a paragraph of Sa is sanded oneself article:
Total minitary force of army of government of Er of Syrian Ba Sha 30 much, army total minitary force 220 thousand, it is core with armor army.
Because of the influence of war of 4 middle east, syria is the arms of the person at the head of a procession of antagonism Israel, army is quite so powerful.
Before civil war erupts, syria is had be as high as panzer of nearly 10 thousand tank. Among them tank is as high as many 5000, include: 2200 vintage T-55, 1000 newer T-62 with 1600 new-style T-72.
Additional, they have chariot of dogface of 2500 BMP1/2 series, still have car of arms of carry of a certain quantity of self-propelled gun, armor and other panzer.
This amount is quite amazing, it is the cavalry big country of before world seniority 10.
Contrary, turn over a government to arm total minitary force does not pass 20 to 300 thousand, heavy weapons is very few, tank is more strange be short of, without air force.
More important is, their cent is many faction, cannot cooperate each other, can interpret a mortise shell crowd.
In civil war initial stage, syrian government uses powerful armor force, fight carry everything before it. They want a few days to be able to mop up only commonly turn over the town with governmental occupational army, all-conquering. Of tank amount, can achieve every even street the situation that a tank patrols.
So, this is initial stage of political power of Ba Sha Er can importunate reason.
The 2nd, er somebody supports Ba Sha.
Syrian civil war is proxy battle, the effect of backside proponent is very big.
Because Syria is a Xiaoguo, land area has kilometer of 180 thousand square only, population is not much also 1000 much.
1/3 the area is province of our country Sichuan, population is 1/8.
So a Xiaoguo, once have intervention of doughty and outside force, can affect warlike process greatly.
And Iran and Russia give Ba Sha Er a large number of support, and dispatch troops directly.
According to public data: 2017, iranian respect is in Syria in all deploy personnel of more than 70 thousand military affairses, among them Iranian army and Iran are Mohammedan revolutionary armed escort adds up share 15 thousand people, allah party and its branch share about 10 thousand people, many Iraqi assorted leaves send commando organization to share 20 thousand people in appraise, iran sends the force of Ma of law the base of a fruit that recruits in the refugee to share 20 thousand people in appraise from native Afghan assorted leaf, still have in addition be faithful to Iran 5000 fight in appraise to 7000 Pakistan and Palestine commando.
At present Iran arms in Syrian die in the last ditch have 6000 people.
And Syrian government army at that time also 200 thousand the left and right sides, turn over a government to arm to have dimensions of thousands of person only more very much, the person that still does not have Iranian die in the last ditch is much.
Only force of military affairs of Iranian so much, maintain Bahaer with respect to enough political power, more never mention it still have Russia.
OK even so say, if do not have Iran and Russia intervene in time, bahaer is in early was about 2016 collapse.
October 2015, the batholith of Ba Sha Er is only kilometer of 20 thousand square, within an inch of is about to be finished. At present they had achieved kilometer of 80 thousand square, 55% what occupy Syrian land gross area.
The 3rd, ba Sha Er must appreciate extreme interest of home.
Benedictory of Ba Sha Er is not Iran and Russia merely, still have domestic extreme power.
Like Syria this is planted country, the people is very much more ignorant, get education rate is low. They do not accept vulgarization notion normally, contrary recipient the extreme religion thought that accords with their belief and lifestyle.
Accordingly, during civil war, include the many extreme force such as Mohammedan country to rise abruptly.
Can say, it is them Ba Sha Er.
With American force, not needing the slightest effort of nature of political power of Er of crumple up Ba Sha, but below how to meet?
Ba Sha Er broke down, the Syrian vulgarization actual strength that the United States supports is too weak, cannot manage overall situation.
And power of library Er heart is stronger, be supported Syrian mouth impossibly also however by the Arab of great majority.
So, the most possible is, extreme armament can replace Ba Sha Er, become the person of Syria that control.
The Mohammedan country that visits Iraq once indulge in wilful persecution, the United States is not willing of course crumple up a wolf, greet a tiger.
So, the United States is not willing to cross much intervening Syria from beginning to end, also not be willing Er of Ba Sha of rapid crumple up.
At present the U.S. Army has 500 people left and right sides only in Syria, compare in those days military strength is worth crumple up to be carried far from for Saddam.
The 4th, syria makes the brand of big country
Syrian civilian distress is, they make the political chip of big country.
Intervening Syria of Russia, Iran, a main purpose is to borrow this and American argy-bargy, what outside be being obtained thereby, give in is windward.
The United States is not willing to abandon Syria thoroughly, also be same purpose.
Final result is, syrian civil war is lengthened without limit, bring about a Syrian civilian catastrophic. The Syrian civil war that lasts 7 years already caused more than 350 thousand person to die, about 100 much people are injured.
At present each country still does not abandon weichiing in Syrian rich, so the war still can last.