Answer:
The mass killing of Armenians by Ottoman Turks during World War One remains a highly sensitive issue.
Turkey has resisted widespread calls for it to recognise the 1915-16 killings as genocide, while historians continue to argue about the events. At the time there were numerous reports of Turkish atrocities committed against the Armenians.
The tragedy is in the news again after the US House of Representatives voted to recognise it as genocide. Turkey condemned the vote as a meaningless political step.
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