Frank has now spent three weeks locked up thousands of miles away from his family. He is accused of an absurd crime which clearly none of the Arctic 30 are guilty of committing.
The only thing he is guilty of is participating in an entirely peaceful protest to raise awareness of a cause that he passionately believes in - protecting the planet and the fragile wilderness of the Arctic.
He has two teenage children back home who miss him terribly, and not knowing when we'll be able to see him again is agony.
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.