ISTANBUL (Reuters) – Turkey is sending Syrian rebel fighters to support Azerbaijan in its escalating conflict with neighbouring Armenia, two Syrian rebels have said, as Ankara pledges to step up backing for its majority-Muslim ally.

The clashes over the territory of Nagorno-Karabakh are the heaviest since 2016, with reports of dozens of deaths and hundreds wounded.

Armenia’s ambassador to Moscow said on Monday that Turkey had sent around 4,000 fighters from northern Syria to Azerbaijan and that they were fighting there, an assertion denied by an aide to Azerbaijan’s President Ilham Aliyev.

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