Research on insurgencies holds lessons for how to aid Ukraine, but assessing what policies are best will depend on how the conflict proceeds.

Ukraine and Russia are adapting to a changed media environment that provides new ways to distribute information and disinformation.

Europe is anticipating a world in which Russia is weaker but no less dangerous.

It's not clear that countries providing support to Ukraine have considered the consequences of a long-term conflict.

White nationalism has a long history in Austrailia that has been reinforced by transnational ties to extremist groups in the United States.

Identifying and assessing the factors that motivate soldiers on the battlefield help explain the conflict so far and how the contest of wills could shift over time.

Terrorist attacks have declined since the start of the pandemic, but it is unclear what factors have driven this trend and whether it will last.

Iraq needs a reliable military, but that will require training that fosters leadership, adaptability and esprit de corps.

There was an opportunity for a more productive relationship between Riyadh and Baghdad.

Chinese officials claim the U.S. diplomatic boycott is politicizing the games, but the Olympics have always been political.

Germany is often offered as a model for how a country can reckon with a history of racism, but German leaders' denials about institutional racism demonstrate the limits of its approach.

Russia's intervention in Syria cemented its presence in the Middle East at relatively low cost.