What happened in 2014 that made the Syrian civil war more complicated?

A complete drag and drop answer will:
• identify what the Assad government used that was in violation of international law
• identify the two countries that gave the Assad government support
• identify what type of state Yemen became as the fighting continued

Bot GPT 3.5 Bot GPT 3.5 answered

- The Assad government used chemical weapons in violation of international law

- Russia and Iran gave the Assad government support
- Yemen became a failed state as the fighting continued