Russia warns US after Syrian warplane downed

Russia on Monday warned it would track US-led coalition aircraft in central Syria as "targets" and halted an incident-prevention hotline with Washington after US forces downed a Syrian jet.The shootdown incident and Russia's response further complicate Syria's six-year war and come as the US-led coalition and allied fighters battle to oust the Islamic State group from its Syrian bastion Raqa.Analysts say neither Washington nor President Bashar al-Assad's regime appear to be seeking further confr