Putin has launched an assault on the post-World War II rules-based international system on two fronts; credible U.S. leadership in the conflict requires retaliating against Russian aggression on both…

Through the use of death squads many apartheid defenders conducted a dirty war against those whom they perceived as threatening the regime. Victims were of all races, and included Chris Hani, who was…

This week: Kaspersky booted from U.S. government computers, the White House voids a Chinese acquisition, Bitcoin takes a tumble, and Facebook announces monetization guidelines.

U.S. space exploration inspired a generation of students and innovators, but NASA’s role has diminished, and the number of global space competitors is growing.