Tensions have risen between the United States and Cuba as the Trump administration tries to force the island’s Communist government to make drastic changes.

© Doug Mills/The New York Times

Seeking new elections, María Corina Machado will need to tread carefully to avoid offending the Trump administration, while also asserting her own leadership.

© Leonardo Fernandez Viloria/Reuters

Blocked from entering her country, Venezuela’s opposition leader spoke with The Times about her efforts to return and her relationship with the Trump administration.

© Nathalia Angarita for The New York Times

After nearly 10 months in exile, Ms. Machado, a Nobel laureate, came back to challenge leaders who have sidelined her and press for new elections.

© Federico Parra/Agence France-Presse — Getty Images