Carlos Manzo, an outspoken critic of cartel violence, was gunned down in public on 1 November.

Carlos Manzo, an outspoken critic of cartel violence, was gunned down in public on 1 November.

The gathering in South Africa comes as US President Donald Trump gives Ukraine until Thursday to agree to the deal.

It was billed as potentially the political showdown of the year - instead, both men gave one another praise.

While Donald Trump admonishes Nigeria for persecuting Christians, Christian converts tell the BBC they live in fear of being deported to Iran from the US.