John Oliver bought ad time on Sean Hannity's show in hopes of reaching President Trump

The Washington Post

The Last Week Tonight Catheter Cowboy ads will air this week to address the international Iranian nuclear agreement. “Hey there, Donald, sorry to interrupt your supper,” Catheter Cowboy says in the ad. “I’m here to tell you the Iran deal may not be perfect, but it helps restrict Iran’s ability to start making a bomb for at least 10 years."