Russian President Vladimir Putin said Tuesday that he intended to remove the Islamic State groups.
The Russian government has doubled down on its controversial military support for the Syrian government of Bashar al Assad.
US Secretary of State John Kerry is worried about Russian military presence in Syria, and will take it forward when Russia Foreign Minister Sergei Lavrov visits New York later this month.
Members of the United States military arrived in Ukraine to begin a training mission with the goal of helping to bolster beleaguered Ukrainian forces fighting a civil war against Russian-backed separatists.
