Members of the Ukrainian parliament’s anti-corruption committee on June 20 lambasted Semen Kryvonos, head of the National Anti-Corruption Bureau of Ukraine (NABU), for refusing to report at the committee on a scandal over alleged leaks from the NABU. The NABU has been in turmoil since journalists found out in May that its employees had allegedly been leaking information to suspects in a high-profile corruption investigation, and warning them about upcoming searches. A month later, the investigation of the leak is ongoing, and the bureau hasn’t given any public explanation, or fired anyone. Giz…