Intense fighting continued in the Syrian city of Aleppo on Saturday as rebel and government forces clashed in what’s being described as a “decisive battle” to push out those still loyal to president Bashar al-Assad. Once considered an Assad stronghold, Aleppo has seen the fighting intensify since July. A YouTube video showed gunfire erupting at a medieval marketplace, though the authenticity of the video hasn’t been verified. At least 94 people were killed across Syria in fighting Saturday, according to opposition groups. Meanwhile, the U.S. has warned Iran to stop shipping weapons to the Assad regime, as the Obama administration recently pledged $45 million in new aid to Syrian opposition forces.