ArrowArtboardCreated with Sketch.Title ChevronTitle ChevronIcon FacebookIcon LinkedinIcon Mail ContactPath LayerIcon MailPositive ArrowIcon Print
Ukraine war

Why chemical weapons constitute a red line: 5 things to know

Russia thought to have sarin, VX, mustard gas and others in arsenal

If conventional methods stall in Ukraine, Russian President Vladimir Putin has two options, analysts say: humiliating retreat or escalation to weapons of mass destruction. (Source photos by Reuters and AP) 

TOKYO -- When U.S. President Joe Biden faced reporters Thursday at NATO headquarters in Brussels, the first question he received was on chemical weapons.

"Have you gathered specific intelligence that suggests that [Russian] President [Vladimir] Putin is deploying these weapons, moving them to position, or considering their use?" asked a reporter.

Sponsored Content

About Sponsored Content This content was commissioned by Nikkei's Global Business Bureau.

Nikkei Asian Review, now known as Nikkei Asia, will be the voice of the Asian Century.

Celebrate our next chapter
Free access for everyone - Sep. 30

Find out more