Peter Magyar hopes to mend relations with Poland during his first state visit to Warsaw. What lessons could he learn from Poland's Prime Minister Donald Tusk?

Hungary's new prime minister, Péter Magyar, is visiting Poland, a traditional ally that can offer plenty of lessons on political transformation and restoring democratic norms.

Hungary's Prime Minister Peter Magyar begins a two-day visit to Poland on Tuesday, hoping to restore ties hit by his predecessor's closeness to Moscow during Russia's full-scale…