Talks in Geneva on a "Paris Agreement"-style plan that would limit plastic production and ban certain plastic chemicals have once again stalled in the final stages of negotiations.

The United States has sent letters to a handful of countries urging them to reject the goal of a global pact, according to a memo and other communications seen by Reuters.

The move has placed the US in direct opposition to more than 100 countries — including Australia — who support an ambitious treaty to end plastic pollution.

• Guest: Murray Watt, Minister for Environment and Water
• Producer: Grace Stranger