Turkey has shot down two Syrian war planes and destroyed more than 100 tanks as tensions between the two countries escalate.
President Recep Erdogan's forces also destroyed air defence systems as part of an operation it launched after an air strike killed dozens of its soldiers last week.
Tensions in northwest Syria have escalated sharply as fighting between Turkey-backed rebels and Russian-backed Syriangovernment forces risks bringing the two regional powers into direct confrontation.
Diplomatic efforts by Ankara and Moscow to defuse tensions have so far fallen short of achieving a ceasefire in the Idlibregion of northwest Syria, the country's last major rebel stronghold after nine years of civil war.
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