US Accuses China of Possible Nuclear Test at Lopnor Site
February 18, 2026 – The United States has accused China of potentially conducting a nuclear test at its Lopnor test site in Xinjiang. The accusation stems from a 2.75-magnitude explosion detected by a seismic station in Kazakhstan.
A high-ranking State Department official stated that the data from the explosion does not align with typical earthquake or industrial explosion signatures, suggesting a possible nuclear test utilizing a “de-coupling” method designed to minimize seismic detection [State Department].
Conflicting Assessments
However, the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has expressed caution, stating that the available data is insufficient to definitively confirm a nuclear event. Robert Floyd, the CTBTO’s executive secretary, noted that the two weak seismic signals recorded do not allow for a conclusive determination of their origin [State Department].
China Denies Accusations
The Chinese embassy in Washington has dismissed the accusations as baseless and politically motivated. Beijing maintains that it has not conducted any nuclear tests since 1996 and urges the US to adhere to a moratorium on such testing [State Department].
Arms Control Concerns
Experts are warning that the expiration of key arms control treaties is increasing the risk of a novel nuclear arms race. The New START treaty, the last remaining major arms control agreement between the US and Russia, expired on February 5, 2026, raising global instability concerns.
The US has expressed a desire to include China in future arms control agreements, recognizing its growing nuclear capabilities. However, negotiations have yet to yield significant progress.
Social Security Payments on February 18, 2026
On February 18, 2026, Social Security beneficiaries born between the 11th and 20th of any month will receive their monthly payments. This payment reflects a 2.8% cost-of-living adjustment (COLA). Approximately 71 million Americans rely on Social Security benefits [Economic Times].
Other Events on February 18, 2026
February 18, 2026, also marks several other observances, including Ash Wednesday, Cow Milked While Flying in an Airplane Day, and National Drink Wine Day [Checkiday.com]. Lent will also begin on this day [Checkiday.com].