Explainer-What is the status of peace talks between Armenia and Azerbaijan?

Armenian Prime Minister Nikol Pashinyan and Azerbaijani President Ilham Aliyev are set to meet with U.S. President Donald Trump at the White House to discuss a peace deal after decades of conflict over Nagorno-Karabakh. Key obstacles include Armenia’s constitutional references to the region and a proposed transit corridor through Armenia, which Azerbaijan seeks but worries about Armenian control.