Ukraine closes airspace to civilian flights amid "high risk" to safety

Ukraine said early on Thursday it had closed its airspace to civilian flights because of a "high risk" to safety, hours after a conflict zone monitor warned airlines should stop overflights over the risk of an unintended shootdown or cyber attack. Russian President Vladimir Putin authorised a military operation in eastern Ukraine on Thursday in what appeared to be the start of war in Europe. "The provision of air traffic services to civilian users of the airspace of Ukraine is suspended," Ukrainian State Air Traffic Services Enterprise said on its website. "We will additionally inform about changes in the use of Ukraine's airspace," the agency added, without providing further details. Eurocontrol, which coordinates air traffic in Europe, said that Ukraine's airspace was not available because of military restrictions. An El Al flight from Tel Aviv to Toronto made a sudden U-turn out of Ukraine's airspace around the time a notice to airmen was issued early on Thursday deeming the area restricted, according to flight tracking website FlightRadar24. A LOT Polish Airlines flight from Warsaw to Kyiv also turned back to Warsaw around the same time. The turnarounds came after Safe Airspace, which was set up to provide safety and conflict zone information for airlines after Malaysia Airlines flight MH17 was shot down over eastern Ukraine in 2014, said it had increased its risk level to "do not fly".<br/>