Are Christians being persecuted in Nigeria as Trump claims?

US President Donald Trump has issued a fresh threat to target Nigeria if the government "continues to allow the killing of Christians".

In a video released on Truth Social he pledged to "do things to Nigeria that Nigeria is not going to be happy about" and "go into that now-disgraced country guns-a-blazing". But the White House's interest in this subject 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".

Similar figures have also been gaining traction on social media.