Nigeria, Nov. 23 -- US President Donald Trump doubled down on his attacks on Nigeria on Friday, accusing the country of failing to protect Christians, and using the term "genocide" for the first time to describe the violence in Africa's most populous country.

"I think Nigeria is a disgrace. The whole thing is a disgrace," the American president said on Fox News Radio's The Brian Kilmeade Show. "They're killing people by the thousands. It's a genocide. And I'm really angry about it."

Earlier, Mr Trump threatened to take military action in Nigeria if its leaders did not take urgent and deliberate steps to halt the killings of Christians by non-state actors.

These murders, he claimed, have reached genocidal proportions. He doubled down on...