Andrii Yermak, the chief of staff to Ukrainian President Volodymyr Zelenskyy, has resigned as anti-corruption investigations intensify in Ukraine. Earlier on the day of his resignation, investigators searched his residence as part of a broader inquiry into corruption within the energy sector. Although Yermak was not formally accused of any wrongdoing, the pressure from lawmakers and the public regarding corruption issues led to his decision to step down. The investigations are part of a significant effort to address corruption in Ukraine, which is crucial for the country's aspirations to join the European Union. Yermak has been a close ally of Zelenskyy and played a vital role in negotiations with the U.S. and Russia. His resignation reflects the challenges facing the Ukrainian government as it navigates both internal corruption and external pressures for reform.