State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and international arms control challenges.

If nothing replaces the New START nuclear arms treaty, security analysts see a more dangerous environment with a higher risk of miscalculation.

The US accused China Wednesday of conducting at least one secret nuclear test as Washington continued its push for a new arms control treaty that would include Beijing in addition to Moscow and Washington.

Jay Cowan still worries about the Rulison blast’s proximity to the Colorado River and expresses disbelief at the 107 days that radioactive gas was burned in order to test whether the radionuclides would eventually become diluted enough to market fossil fuels.