I thought that the news was wide spread that those two loser guys spoke on the phone and agreed on the truce...
Here are the sources on both banks of the pond:
US and Russia agree to enforce new Syria ceasefire | World news | The Guardian
U.S. and Russia agree on Syria cease-fire terms, officials say - CBS News
So, let's wait for some 5 days and see whether it really works.
I am a little bit pessimistic because Assad is actually dancing the Iranian dance (not Russian), and many small dispersed groups called as "fighters for freedom" are controlled/financed by Saudis, Qatar, Turkey and thus are not totally under the full US control.