A second violation of Turkish airspace by a Russian warplane in two days has prompted Ankara to summon Moscow’s ambassador once again.<br /><br /> The US and Nato have condemned Russia’s actions, while Turkey has threatened to respond, raising concerns of a direct confrontation. <br /><br /> The Kremlin responded that the first incursion was merely a ‘mistake’, but added volunteer ground forces would join the fight.<br /><br /> The airspace over Syria is increasingly crowded, with Russian warplanes<br />as well as those of the US and its allies now flying combat missions over the same country for the first time since the Second World War.<br /><br /> With reports of civilian casualties following the Russian airstrikes, Turkey continues to press for no-fly zones in Syria, but Moscow remains opposed to such a step.<br /><br /> Russia, which supports embattled President Bashar al-Assad, claims to be targeting the so-called Islamic State group. However, the anti-Assad coalition says Moscow has targeted other militants, hitting few IS targets.
