The US has also provided military assistance and training to various Syrian opposition groups, including the Free Syrian Army and the Syrian Democratic Forces (SDF). The US has also worked with its allies, including Turkey and Saudi Arabia, to support the opposition.
The US has also been involved in diplomatic efforts to resolve the conflict in Syria. In 2012, the US and Russia brokered a deal for the Syrian government to give up its chemical weapons arsenal. In 2015, the US, Russia, and other major powers agreed to a ceasefire in Syria, but the ceasefire quickly collapsed.
The US has also been involved in efforts to provide humanitarian assistance to the millions of Syrians who have been displaced by the conflict. The US has provided food, water, and medical care to Syrian refugees and internally displaced persons (IDPs).
The US's involvement in Syria has been controversial. Critics argue that the US has been too deeply involved in the conflict and has contributed to the violence. Others argue that the US has a moral obligation to help the people of Syria and to prevent the country from falling into the hands of extremist groups like ISIL.