US Committed to Pursuing Syria Plan Agreed Upon by Lavrov, Kerry

"We are committed to moving forward on the steps agreed to by Secretary Kerry and Foreign Minister Lavrov in their meeting last week," Kirby said.

The United States and Russia routinely discuss means of strengthening the ceasefire in Syria, efforts to improve humanitarian situation in the country and find a political solution to the crisis, he added.  

​Kerry met with Russian Foreign Minister Lavrov and President Vladimir Putin last week in the Russian capital, where they discussed concrete steps to restore the ceasefire and possible US-Russian military cooperation against terrorist groups in Syria.