Ukrainian military aviator Nadia Savchenko said she would take a lie-detector test to silence critics that have suggested she might be a double agent for Russia. Savchenko spent nearly two years in Russian captivity before she was released in May. After receiving a hero’s welcome and being sworn in as a lawmaker, recent polls show a dip in her popularity. Speaking to Oleksandr Lashchenko, host of RFE/RL’s Ukrainian Service program Saturday Interview, Savchenko accused some Ukrainian media of misrepresenting her.