Delegates from more than 170 countries attempting to negotiate a treaty to curb global plastic pollution ended a weeklong meeting in Busan early Monday without an agreement, pushing talks to another session next year.

Countries have deadlocked on a United Nations treaty on plastic pollution, according to The Associated Press. The treaty, with an aim of tackling worldwide plastic pollution, faced a hurdle due to negotiators not being able to get past the question of whether it should bring down the planet’s overall plastic while also having mandatory