The northwestern Syria offensive, codenamed "Dawn of Idlib 2",[4] is a military operation launched by the Syrian government, Russia, Iran, Hezbollah and other allied militias against the Syrian opposition of the Interim Government and the Syrian Salvation Government (Hayat Tahrir al-Sham)[59] forces in Idlib and surrounding provinces during the Syrian Civil War. The offensive began on 19 December 2019.