Bolivian President Evo Morales is among those attending the conference. On Wednesday, Morales chewed on a coca leaf and called on President Obama to stop massive eradication programs against it.

Bolivian President Evo Morales: “We know that a part of the coca leaf is diverted towards an illegal program: cocaine. We are very responsible. We’re not defending cocaine, and we are never going to defend it. We’re not the cocaine culture. So, with the new president, Obama, we want to improve relations and have common plans.”