In Syria, government forces are preparing for an imminent offensive against the northwestern province of Idlib, the Syrian opposition’s last major territory in the country. Three million people currently live in Idlib. On Monday, President Trump threatened Syrian leader Bashar al-Assad, tweeting, “President Bashar al-Assad of Syria must not recklessly attack Idlib Province. The Russians and Iranians would be making a grave humanitarian mistake to take part in this potential human tragedy. Hundreds of thousands of people could be killed. Don’t let that happen!” Hours after Trump’s tweet, Russia reportedly launched airstrikes against Idlib.