The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article. Subscribers may view the full text of this article in its ...

March 28 (Reuters) - The disposition of Russian forces in Ukraine during the last 24 hours has seen no significant change, British military intelligence said on Monday. However, Russia has gained more ...

What is underlying the Biden administration’s new sense of urgency on Thursday over a possible Russian re-invasion of Ukraine? I can report that Russian and Belarusian forces have significantly ...

The Vietnam War was fought in a jungle environment that provided cover to the enemy and made battlefield observations difficult, so military strategists used herbicides to remove foliage along key ...