The negotiations in Busan, South Korea, were supposed to be the fifth and final round.

The meeting was supposed to be the final round but oil-producing nations are opposing any cap on production.

Delegates seeking the world's first deal to curb plastic pollution began openly advocating for an extension of talks on Sunday, accusing a handful of nations of obstructing an ambitious agreement.

BUSAN, South Korea: Doubts rose on sealing a global treaty to curb plastic pollution on the last day of scheduled talks, as over 100 countries pushed to cap production while a handful of oil-producing countries wanted to focus only on plastic waste. The fifth and final UN Intergovernmental Negotiating Comm