At the first U.N. climate meeting since President Trump announced the withdrawal of the U.S. from the Paris agreement, countries came together to iron out some details – like rules for how carbon emissions will be measured and how to pay for these efforts. Called COP23, the meeting took place in Bonn, Germany in November 2017, and School of Sustainability Professor Sonja Klinsky provided advance insight. “We are still part of the Paris agreement. If the United States wants to pull out of the accord, it will have to file this in writing in November 2019,” Klinsky told ASU Now. "Other countries’ perceptions of the willingness of the U.S. to be a cooperative global actor generally may change how effective it is at promoting its own interests. It is a distinct possibility that the U.S. will have less influence in this arena than it had previously; however, it is too early to say whether or not this has happened."