The troublemaker, USA, lost the war in Syria to Russia.

http://www.newsweek.com/us-lost-war-syria-iran-russia-winning-final-battle-674833

Who and what started the war in Syria in the first place?

The USA was the one who created the war in Syria by trying to topple the Syrian government.  Then, it roped the UK into the tussle against Syria to gain a stronger foothold.  The USA & UK were trying to control the Middle East by establishing more proxies but the Russian thwarted the plan.  In the end, it was the Russian who managed to gain control of Syria.  The USA and UK can no longer decide on Syria today because of the Russian's intervention.

In a nutshell, the USA, UK and Russia are the countries that created the mess in Syria for their own political interests.

China knew exactly what was going on in Syria and censured the UK in the UN.  The UK couldn't rebut China because it was guilty as charged.

http://www.china-un.org/eng/hyyfy/t1452588.htm

Quote:

"Lastly, I should like to point out once again that it is totally unacceptable for the British representative to publicly distort the solemn position of another country in the Council Chamber. His logic is untenable. We hope that, on the issue of chemical weapons, on which the international community is in consensus, he will stop using the Security Council in an abusive manner for his own political purposes, as that is not in the interest of the Syrian people, and that, in the future, the British representative will refrain from such practices."

End Quote.