Tawhid Brigade in Aleppo have sent support units to al-Qusayr surrounded by Assad regime forces and Hezbollah militias, said press advisor of Tawhid Brigade Abdulkerim Abu Firas. Abu Firas told the AA that a total of 300 support units have arrived in al-Qusayr adding that they have also sent an ambulance, an antiaircraft weapon and ammunition. \"Assad forces are undertaking air and ground operations with Hezbollah forces. The Syrian Army receives support from Iran and Hezbollah as they have lost ground. Syrian opposition fights against Iranian Hezbollah militias,\" claimed Abu Firas.