Editor's note

There's been an outpouring of emotion after the historic meeting between North Korea's Kim Jong-un and his South Korean counterpart Moon Jae-in what many hope will result in genuine peace between the two historic enemies. Ed Griffith warns that some realism is necessary - there's still much to be done and agreed on. And powers beyond the two Koreas also have a role to play.

Many will be wondering why US President Donald Trump invited Nigeria's leader Muhammadu Buhari to the White House given Trump's apparent disdain for Africa. And why did Buhari accept? Stephen Onyeiwu suggests that both leaders could use the occasion to further their own individual political goals. The importance of Nigeria's oil reserves to the US also shouldn't be ignored.

Natasha Joseph

Science & Technology Editor

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EPA/Korea Summit Press Pool

A Korean peace process is underway – but it still depends on the US and China

Ed Griffith, University of Central Lancashire

The astonishing sight of two Korean leaders crossing the border that divides them is just a first step.

Nigerian President Muhammadu Buhari heads to the White House. EPA/Frank Augstein

What Buhari and Trump stand to gain from state visit

Stephen Onyeiwu, Allegheny College

It's inconceivable that military prowess can offer long-term solutions to Nigeria's deep-rooted institutional problems.

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