A new compilation of data gives insight into the African Islamist insurgency’s reach, tactics, and evolution. It reveals a far higher victim count than previous estimates.

The Democratic and Republican presidential contenders have begun defining their approach to major foreign policy issues as they jockey for position in their parties’ primaries.

If 2018 was a year marked by international challenges that percolated but did not boil over into full-blown crises, next year may well be the year in which that good fortune runs out.