On April 22 and 23rd, the White House hosted the Climate Leaders Summit which featured more than 40 world leaders. Joe Biden kicked off the summit with a major announcement that the United States has set a target to reduce by 50% its carbon emissions by the year 2030 On the line with me to discuss the significance of the White House announcement and its implications for climate diplomacy is Pete Ogden, Vice President for Climate and the Environment at the United Nations Foundation.