National Security Advisor Flynn resigns after lying about Russia contacts

National Security Advisor Michael Flynn resigned after just 24 days following revelations that he lied to Vice President Pence and other officials about his discussions with Russian Ambassador Sergey Kislyak regarding sanctions. Flynn had discussed sanctions before Trump took office, potentially violating the Logan Act, then misled the administration about these conversations. Trump initially defended Flynn, saying he did nothing wrong, before accepting his resignation. The FBI was investigating Flynn's contacts, and his lies to federal agents would later lead to criminal charges. This was Trump's first major scandal as president and foreshadowed the Russia investigation that would define his presidency.