The new U.S. plan is to: 1. keep north-east Syria indefinitely occupied, 2. ???, 3. Iran leaves Syria and the 'regime' in Damascus falls:
"President Trump, who just five months ago said he wanted “to get out” of Syria and bring U.S. troops home soon, has agreed to a new strategy that indefinitely extends the military effort there and launches a major diplomatic push to achieve American objectives, according to senior State Department officials.
Although the military campaign against the Islamic State has been nearly completed, the administration has redefined its goals to include the exit of all Iranian military and proxy forces from Syria, and establishment of a stable, nonthreatening government acceptable to all Syrians and the international community.
The first major step of the "diplomatic push" is to prevent the imminent Syrian army operation against al-Qaeda aligned groups in Idleb province":