US Secretary of State John Kerry says Washington has agreed with Russia to strengthen monitoring of ceasefire in Syria, and that he hopes for more clarity on the ceasefire soon. And UN Syria envoy Staffan De Mistura says a mechanism is being put in place, but it needs political will.

U.S. Secretary of State John Kerry (L, front) and UN Special Envoy for Syria Staffan de Mistura (R, front) arrive for a press conference after their meeting in a hotel in Geneva, Switzerland, May 2, 2016. U.S. Secretary of State John Kerry on Monday urged all parties to the Syrian conflict to end violence and restore the cessation of hostilities during his second day trip here for talks focusing on the Syrian situation. (Xinhua/Xu Jinquan)

"Russia and the United States have agreed that there will be additional personnel who will work from here, in Geneva, on a daily basis, 24/7 in order to, 24 hours a day, seven days a week, in order to try to make sure that there is a better job and a better ability to be able to enforce the cessation of hostilities day to day," Kerry said.

""We are reinvigorating actually together, between the Russians and the Americans in the U.N. building the operations centre, in other words we are preparing the mechanism. But the mechanism needs a political will, otherwise we would have only the mechanism, but that is actually being started today; preparing for a much better mechanism, monitoring and controlling of a new ceasefire," Mistura said.

Kerry was in Geneva for talks with other leaders to try to restart the Syrian peace talks. He said the Syrian conflict was in many ways out of control, and urged all parties to end violence and restore the cessation of hostilities. Kerry said there were a lot of conversations taking place on Sunday, on how to separate al-Nusra from the opposition fighters and stop the fighting in Aleppo. He said that progress had been made in this regard.