“Obama was elected on a mandate to”

Perhaps, but since that time, he’s attacked more Muslim states than Bush/PNAC did.
You actually get paid for this … ?

“He was drawn into the Libyan war”

Not really. That criminal war was also always about “regime change”, and sadly, you helped sell that one too.

The crime that is Syria was far more conspicuous because those behind it had just done the same to Libya.

“when chemical weapons killed civilians, Mr. Obama still declined to order”

No, it’s just that his own intelligence agencies called him on his lies.

Whose sarin? 
Seymour Hersh 
http://www.lrb.co.uk/v35/n24/seymour-m-hersh/whose-sarin 

Hersh: Syria Sarin Story 'Was Bought by the Mainstream Press' 
http://www.fair.org/blog/2013/12/09/hersh-syria-sarin-story-was-bought-by-the-mainstream-press/ 

Seymour Hersh: Obama "Cherry-Picked" Intelligence on Syrian Chemical Attack to Justify U.S. Strike 
http://www.democracynow.org/2013/12/9/seymour_hersh_obama_cherry_picked_intelligence