This is clearly a deliberate provocation by a faction within the US military, I would say around Carter.
There is also an election in Russia today. Should Putin not retaliate militarily then he could be perceived as weak and his party suffer.
And to top it all off there has been an explosion in New York in which nobody so far has died.
So the USA kills over 60 Syrian soldiers, and an explosion in New York that killed nobody and has not yet been declared a terrorist act: which do the media focus on?
URGENT: Timing & other aspects of US strike on Syrian army suggest intentional provocation – Churkin https://t.co/SvnivMLNTj— RT (@RT_com) 18 September 2016