RT Matrix @matrixchambers: Ben Emmerson QC of @matrixchambers submits petition of Carles Puigdemont to the UN Human Rights Committee https://t.co/9YYExgEUAf 4th March 2018 RT Matrix @matrixchambers: Ben Emmerson QC of @matrixchambers submits petition of Carles Puigdemont to the UN Human Rights Committee https://t.co/9YYExgEUAf