A long-running lawsuit over the use of Agent Orange/dioxin during the war in Vietnam is set to enter a decisive stage, as France’s top court prepares to review the case filed by Tran To Nga, a victim of the toxic chemical, against major US chemical firms.

US companies that manufactured the toxic Agent Orange (AO)/dioxin defoliant used by US forces during the war in Vietnam must take responsibility for dealing with the consequences, the Vietnamese Ministry of Foreign Affairs' spokeswoman Le Thi Thu Hang said on May 13.

President of the VN Association of Victims of AO/dioxin Nguyen Van Rinh has sent a letter expressing support for Vietnamese-French Tran Thi To Nga who had filed a lawsuit against 26 US chemical firms for producing chemical toxins sprayed by the US army in the war in Vietnam, causing serious consequences for the community, her children and herself.