Russia warned USA about launching attack on Syria and USA backed off.

https://sg.news.yahoo.com/russia-says-respond-dignity-u-mounts-syria-strike-165755038.html

After Russia issues warning about retaliation if USA attacks Syria, USA tries to wiggle its way out of the allegation.

https://sg.news.yahoo.com/u-defense-secretary-says-syria-appears-heeded-u-125859625.html

Russia can also say that its warning to the USA has proved to be effective in stopping USA from attacking Syria.