Putin: US should present Syria evidence

Russia finds the accusations unacceptable and the idea of performing a military strike on the country even more so. Especially as it would constitute a violation of international law, if carried out without the approval of the UN Security Council.
Further to this, Putin told Obama that he should consider what the potential fallout from a military strike would be and to take into consideration the suffering of innocent civilians.
The Russian president has expressed certainty that the strategy for a military intervention in Syria is a contingency measure from outside and a direct response to the Syrian government’s recent combat successes, coupled with the rebels’ retreat from long-held positions.

source rt.com