Syrian government forces used newly arrived Russian warplanes to bombard Islamic State fighters in Aleppo province in northern Syria, Reuters said on Thursday, in an attempt to break a siege on a nearby air base. Russia is bolstering its ally Damascus with military aid that U.S. officials...

Russia's military intervention in support of President Bashar al-Assad has dismayed Gulf Arab enemies of the Syrian leader who say it will prolong the war and keep Syria firmly in the orbit of their arch regional rival Iran. Russia says it is providing arms to the Syrian leader, a...

The U.S. military has assessed that the type of Russian aircraft in Syria is consistent with "force protection," U.S. Secretary of State John Kerry said on Tuesday. "For the moment it is the judgment of our military and experts that the level and type represents basically force protection,"...

Rebels who have inflicted big losses on Syrian President Bashar al-Assad say Russia's intervention in support of its ally will only lead to an escalation of the war and may encourage the rebels' Gulf Arab backers to pour in more military aid. Russia's deployment is prompting a...