US President Donald Trump's threat to go into Nigeria "guns-a-blazing" to stop the killing of "record numbers of Christians" did not come out of the blue.
For months, campaigners and politicians in Washington have been alleging that Islamist militants were systematically targeting Christians in Nigeria.
But the BBC has found that some of the data being relied on to come to this conclusion are difficult to verify.
In September, popular television host and comedian Bill Maher upped the ante describing what was happening as a "genocide" .
Referring to the Boko Haram group, he said "they have killed over 100,000 since 2009, they've burned 18,000 churches".
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