All of a sudden, President Vladimir Putin is a soft touch on Syria. First, he let President Recep Tayyip Erdogan of Turkey persuade him not to begin a huge attack on the Syrian opposition in Idlib. Then he defused a conflict with Prime Minister Benjamin Netanyahu of Israel over a downed Russian military plane. Putin’s risk-taking has shaped the outcome of the Syrian war. But in this final stage of the conflict, he is facing powerful constraints on further muscular action. One of his biggest achievements in Syria has been to show that Russia can successfully ignore the U.S. in the Middle East, and set itself up as a fast-moving, resolute, go-to player. It turns out, however, that he can no longer assume U.S. passivity, and that means being careful with U.S. allies, too.

On Sept. 17, Putin and Erdogan agreed to set up a demilitarized zone in the Syrian province of Idlib, to be jointly patrolled by Russian and Turkish troops. It was a turnabout from Russia’s earlier intention to support Syrian President Bashar al-Assad’s push to retake Idlib. It’s difficult to imagine Putin was swayed by Erdogan’s warnings that an offensive could lead to a bloodbath: In similar situations before, notably when Assad recaptured Aleppo in 2016 with Russian help, Putin ignored such warnings. Hours after the Idlib agreement was announced, a Russian military plane carrying 14 service members was shot down over Syria. CNN, citing a U.S. government source, reported that Assad’s air defense had downed the aircraft. Kremlin propaganda outlets and internet trolls reacted with disbelief, likely anticipating official attempts to blame the incident on Israel, whose aircraft were attacking a regime target at the time. The Russian Defense Ministry then admitted that the Syrians had launched the missile, but it still blamed Israeli pilots, who, according to ministry spokesman General Igor Konashenkov, “set up” the Russian plane for the attack, using it as cover against the Syrian air defenses. Defense Minister Sergey Shoigu made an angry call to his Israeli counterpart, and the ministry put out a statement saying it reserved the right to an “adequate response.” There will be no consequences, however: On Tuesday, Putin downplayed the incident during a press conference. Although he said he’d approved the Defense Ministry statement, the Russian president refrained from blaming Israel. He denied that the incident was in any way like the downing of a Russian fighter plane by Turkey in 2015, which lead to a temporary breakdown in Russian-Turkish relations and to Russian economic sanctions against Turkey. In a phone conversation, Putin merely called on Netanyahu to stick to deconfliction agreements.