Syria’s army was moving reinforcements east of Aleppo city on Wednesday, a day after it told Kurdish forces to withdraw from the area following deadly clashes last week.The deployment comes as the Syrian government seeks to extend its authority across the country, but progress has stalled on integrating the Kurds’ de facto autonomous administration and forces into the central government under a deal reached in March.For all the latest headlines follow our Google News channel online or via the app.The United States, which for years has supported Kurdish fighters but also backs Syria’s new authorities, urged all parties to “avoid actions that could further escalate tensions" in a statement by the US military’s Central Command chief Admiral Brad Cooper.On Tuesday, Syrian state television published an army statement with a map declaring a large area east of Aleppo city a “closed military zone” and said “all armed groups in this area must withdraw to east of the Euphrates” River.The area,