Governor of Nigeria's Lagos State, Babajide Sanwo-Olu, says he is temporarily halting his reelection campaign after a train rammed into a public bus in the country's commercial hub Thursday, killing six people and injuring dozens of others.

As Russian missiles rained down on Ukraine in February last year, another grim tale was unfolding on the sidelines: Foreign students, mostly African and Asian, seeking to flee to bordering nations recounted an ordeal of segregation and racism at Ukraine's borders.