Representatives of 16 British trade unions sent an open letter to Turkey's Ambassador in Britain, condemning the Turkish state's invasion attacks on South Kurdistan and the bombing of Northern and Eastern Syria.
The letter, signed by the unions general secretaries, said that Northern Ireland had taught Britain that conflicts could only be resolved at the negotiation table, and recalled the negotiations between Turkey and the PKK between 2013 and 2015.
The letter calls on the Turkish government to end its policy of violence and repression and to develop a new peace initiative.
The following union representatives signed the letter:
Mick Whelan, General Secretary ASLEF
John McGowan, General Secretary SWU
Sarah Woolley, General Secretary BFAWU
Manuel Cortes, General Secretary TSSA
Dave Ward, General Secretary CWU
Vicky Blake, General Secretary UCU
Gary Smith, General Secretary GMB
Sharon Graham, General Secretary Unite the Union
Mary Bousted, General Secretary NEW
Doug Nicholls, General Secretary GFTU
Kevin Courtney, General Secretary NEW
Roz Foyer, General Secretary STUC
Mark Serwotka, General Secretary PCS
Shavanah Taj, General Secretary Wales TUC
Mick Lynch, General Secretary RMT
Clare Mellor, CEO of Thompson's Solicitors