U.S. strategic and tactical nuclear weapons on land, in the air, and at sea, will undergo costly and extensive modernization in the coming years.

Ukraine’s Westward drift since independence has been countered by the sometimes violent tug of Russia, felt most recently with Putin’s 2022 invasion.

The swift development of effective vaccines against COVID-19 was an unprecedented scientific achievement. But production challenges, vaccine nationalism, and new variants have all presented hurdles.