Guatemala is the most populous country in Central America and a key player in the region, bordering Mexico, Belize, Honduras, and El Salvador. It operates as a presidential republic, with reform-minded President Bernardo Arévalo of the Semilla Movement winning the 2023 election on an anti-corruption platform, though he faced significant institutional resistance during the transition and continues to contend with entrenched political and judicial elites. Key fault lines for readers include the tension between reformers and established power structures, persistent corruption and impunity, indigenous rights, and migration pressures that make Guatemala central to U.S. relations on regional immigration and security. It maintains close ties with the United States, which is its principal partner and a major destination for emigrants.