Special report: Poland's constitutional crisis threatens to pull EU apart

"We tend to focus on Hungary and UK but there are other member states - including Germany - who will not want to risk acting against Poland particularly if they can trade Polish support in other policy areas, " says Agata Gostynska-Jakubowska, eastern EU expert at the Centre for European Reform, the London think-tank.

"Relations between Berlin and Warsaw are already tense and Merkel wouldn’t want to risk strengthening the anti-German narrative in Poland," she adds.