London. This is cnn newsroom. After five long years of war, a chance at peace may finally be in sight for syria. U. S. Secretary of state john kerry and his russian counterpart, the Foreign Minister Sergei Lavrov, announced a ceasefire deal on friday. Under the plan, a czessation of hostilities across place in Syria At Sundown on monday. Secretary kerry says it should end the barrel bombs and end to the indiscriminate bombing of civilian neighborhoods that has left scores of people dead. The agreement comes after months of fruitless efforts to reach a ceasefire between the Syrian Regime and moderate syrian rebels. Our Nic Robertson has details now from geneva. Reporter so key to the czyzration of hostilities working, secretary kerry said for the United States to put pressure on the opposition to keep good on their obligations and for russia for their part to keep assad good on his obligations. He said the United States assessment is thats what russia would do. This is how he put it tod