Israeli Prime Minister Benjamin Netanyahu struck a defiant tone in court on Tuesday, his first day testifying in his own corruption trial.

The 75-year-old prime minister has been accused in three separate cases of bribery, fraud, and breach of trust in public office. The trial has dragged on for several years, and his testimony marks the first time in Israel’s history that a sitting prime minister has testified in a criminal case. He vehemently denies any wrongdoing.