The transition to a low-carbon economy after the Paris Agreement has been embraced by an unprecedented number of countries and thousands of subnational groups, and is contributing to growth and competitiveness globally.

In his first major public event since becoming EU ambassador, David O’Sullivan offered his perspective on the many common challenges shared by the European Union and the United States.

Facing crises in Ukraine and the Middle East, it is past time to reform and strengthen the European Union’s foreign policy.