"air strikes in Syria that were specifically defined as being against his capability to use chemical weapons against Syrians. "
What does that mean ? You seem convinced that Assad did use chemical weapons against his own people, a conclusion that the UN never claimed-
" The report, which was "careful not to blame either side," said that during the mission's work in areas under rebel control, "individuals arrived carrying other suspected munitions indicating that such potential evidence is being moved and possibly manipulated."[115] The UN investigators were accompanied by a rebel leader:"
https://en.wikipedia.org/wiki/Ghouta_chemical_attack#UN_Ghouta_Area_report
further the above
http://whowhatwhy.org/2014/12/01/really-used-chemical-weapons-syria/
" Russia is a key reason why IS are now a threat, because it was they and China who were instrumental in stopping any concerted UN action. "
Apart from the unsupported claim about Russia and IS, the "West 'ignored Russian offer in 2012 to have Syria's Assad step aside' "
http://www.theguardian.com/world/2015/sep/15/west-ignored-russian-offer-in-2012-to-have-syrias-assad-step-aside
https://www.washingtonpost.com/news/worldviews/wp/2015/09/15/the-west-dismissed-russian-offer-to-help-remove-assad-in-2012-says-top-diplomat/
" We also know that one of the many reasons IS gained a footing is that they were supported by Assad too" - proof?
"Assad probably doesn't really care about what happens to IS. Almost certainly he has given up trying to reclaim the entire country, but would settle for a western state, with IS to the east." - another unbacked assertion.
"Maybe, we might be naive enough to think, as a result of Vienna, you never know " and 7 hours later-"There is, at last, a political process underway to work out a political solution."
As for cluster bombs
"The treaty was opposed by a number of countries that produce or stockpile significant quantities of cluster munitions, including China, Russia, the United States, India, Israel, Pakistan and Brazil"
https://en.wikipedia.org/wiki/Convention_on_Cluster_Munitions