What happened in Syria?

The current president belongs to a minority, but this nation is the elite of Syria and holds most of the interests. It was the father of the current president who seized power by military means. Now people want the president to step down and carry out reforms, which has led to serious violent conflicts, so there is the current opposition. The west supports the current opposition, but it does not dare to send troops to intervene rashly. First of all, the economic problem is very serious now. Second, Syria has a military port rented by Russia, which is of great value for Russia to balance NATO. Therefore, if the west rashly attacks, it will fall into proxy war with Russia. It is estimated that Iran will not stand idly by, and the third Middle East war may be out of control. There are already many Islamic immigrants in the west, saying that western culture is more tolerant, but it is difficult to guarantee that there will be no racial hatred in China. Fourth, in this year's US election, Obama will not rashly make a move, otherwise it will give opponents a chance to attack. Therefore, I think the Syrian government will eventually fall. If it is not a long-term problem, even western support is useless. After all, Rome wasn't built in a day. But the current president will not step down easily, because if the minority group he belongs to steps down, it will not be liquidated by the majority group, even if the west can ensure security, it is useless. Of course, the United States wants to achieve the goal of letting the current president step down through sanctions. It is best not to send troops, to establish a pro-Western, at least neutral country, and to further isolate Iran. After all, the strategic focus is to return to Asia.