Shane Bauer knows firsthand what it’s like to be a prisoner in Iran. And after news broke Saturday morning about the exchange that delivered four imprisoned Americans, he had plenty to say about Hillary Clinton’s response to the developments in Iran.

In a series of tweets posted late Saturday night, Bauer, who is now a senior reporter at Mother Jones, called Clinton’s appeal for more sanctions “totally irresponsible” and accused her of constantly inflaming tensions with Iran.