Countries negotiating a global treaty to curb plastic pollution have failed to reach agreement, with more than 100 nations wanting to cap production while a handful of oil-producers were prepared only to target plastic waste.

The UN environment chief insisted Monday that talks on a landmark plastic pollution treaty were not a failure, saying important progress was made despite negotiations collapsing without agreement.

The UN summit on plastic pollution has ended without formal consensus, despite widespread support for ambitious measures. The summit, held in Busan, South Korea, was marked by calls for a globally binding treaty to address plastic pollution across its entire life cycle.