Secretary of State John Kerry is threatening to cut off all contacts with Moscow over Syria, unless Russian and Syrian government attacks on Aleppo end. The State Department says Kerry issued the ultimatum in a Wednesday, Sept. 28, 2016, telephone call to Russian Foreign Minister Sergey Lavrov.

U.S. Threatens To End Diplomatic Talks With Russia On Syria If Aleppo Offensive Continues

Syrian President Bashar al-Assad has allowed government forces to continue military offensives targeting the terrorist groups Al Nusra and Islamic State, as well as disputed groups who are called legitimate opposition by US officials.