The last remaining nuclear treaty between the U.S. and Russia has expired, ending decades of arms control between the two countries with the largest nuclear arsenals.

For the first time in over half a century, the US and Russia have no legally binding agreement limiting their strategic nuclear forces. Does the nuclear race begin now as the New START treaty expires ...

The New Start treaty has limited the number of deployed strategic nuclear warheads for both countries.

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

The treaty is set to lapse Thursday, with Russia saying it had not heard from US officials.

The treaty put meaningful limits on the nuclear arsenals of both countries, but now it has expired with no plans to replace it.

Russia’s ongoing war in Ukraine has increasingly exposed a growing shortage of modern weapons and advanced equipment in its armed forces, leaving the Kremlin ever more reliant on older Soviet-era ...

Russia’s war economy is fully devoted to the struggle in Ukraine—giving the Kremlin few resources for long-term projects like a sixth-gen fighter jet.

December 16, 2025: After nearly four years of fighting in Ukraine , more Russian soldiers are reaching the end of their term of service and returning to Russia. Many of them are bringing their weapons ...