Defense

New “exascale” supercomputers will bring breakthroughs in science. But the technology also exists to study nuclear weapons

An expert explains why it’s so odd that the suspected Chinese spy balloon can change course

A cybersecurity expert explains how the FBI’s operation against the ransomware group Hive will impact the rest of this criminal industry

A top U.S. commander wants to test technology that can better defend domestic targets

But the U.S. must probe even further to catch up with China’s access to the ocean’s deepest reaches

A demonstration with drug design software shows the ease with which toxic molecules can be generated

Analysts explain why some fear that the Russian military will use chemical weapons—and how the world would know if it did

Nuclear states admit to owning about 13,000 warheads, but the real number could be higher

When Russia invaded Ukraine, many analysts expected an unprecedented level of cyberattacks—which so far haven’t materialized

Researchers at the investigative collective scour the Internet to expose possible war crimes

The Putin regime has a portfolio of digital tools to control information and crack down on protests within the country

Russia’s invasion of Ukraine shows the limits of nuclear deterrence