The agreement also includes the creation of a demilitarized zone around Syria's Aleppo to deliver humanitarian aid to the city, as well as close coordination of Russian and US airstrikes against Jabhat Fatah Al-Sham, formerly known as al-Nusra Front, and Daesh terrorist groups operating in Syria.
"I reiterate my call to all parties to observe the cessation of hostilities," Kerry stated. "I want to praise the opposition’s courage in embarking on this arrangement, and call on them to separate themselves from Al-Nusra in those areas where intermingling has been a problem."
Early reports of the renewed ceasefire in Syria indicate that there is some reduction in the level of violence in the country, Kerry said.
All parties involved in the Syrian conflict should abide by the new US-Russia ceasefire agreement as it could be the last chance to save Syria as a unified country.
"I urge all the parties to support it [the ceasefire], because it may be the last chance that one has to save a united Syria," Kerry stated.