The trial opens today in Egypt for three detained Al Jazeera journalists who are accused of terrorism-related charges. Peter Greste, Mohamed Fahmy and Baher Mohamed were arrested in late December. Their case has drawn global condemnation against Egypt’s military-backed regime for clamping down on freedom of speech. Greste’s brother, Andrew Greste, spoke to reporters on Wednesday.

Andrew Greste: “He’s in a cell with Baher and Mohamed, so the three of them are sharing a cell together. They’re allowed one hour of exercise a day. So the conditions are pretty tough. But I think probably the most difficult thing for him is the mental challenge of staying positive and focused and not allowing the conditions that he’s living under to become overwhelming and depressing.”

In total, 20 journalists are set to go on trial today, including eight who are in custody.