Vietnamese plaintiffs have condemned a US court's decision to dismiss their legal action against manufacturers of Agent Orange during the Vietnam War.
"It is a wrong decision, unfair and irresponsible," said Nguyen Trong Nhan, vice president of Vietnam's Association of Agent Orange (VAVA).
He said his group was thinking of filing an appeal.
US District Judge Jack B Weinstein made the ruling.
But Mr Nguyen disagreed.
"Weinstein has turned a blind eye before the obvious truth. It's a shame for him to put out that decision. We just want justice, nothing more. "This is just another war that could be long and difficult, as was the Vietnam War. We are determined to pursue it until the very end, until the day we will be able to ask for justice," he said.
Former North Vietnamese solder Ngyuen Van Quy, who is being treated for liver and stomach cancer and whose two children are disabled, also said he would not give up his struggle for compensation.
"I'll fight, not just for myself, but for millions of Vietnamese victims. Those who produced these toxic chemicals must take responsibility for their action," he said.