British Airways cabin crew are to be balloted for fresh strikes in their long-running dispute with the airline.
Joint Unite leader Tony Woodley accused BA's management of "victimising" union members at the airline.
Mr Woodley said the union was "left with no choice" but to call the ballot in a bid to resolve the dispute.
Mr Woodley said: "British Airways' latest offer is not acceptable to our members, a point we made clear to the airline earlier this month. Regrettably, we have not found it possible to resolve the outstanding issues concerning cabin crew since then.
"BA told us it was a business in crisis. They demanded structural change. These changes have been made and this business is now in profit with senior management filling their wallets with the spoils.
"Yet BA is determined to continue with this vicious war against its workforce. It is time for BA to put its passengers first - and the best way to achieve this is to resolve the issues between us, which would not cost BA a single penny and yet would bring priceless stability and peace to the company.
"However, BA's continued hounding of union members leaves us no other option but to conduct a new industrial action ballot.
"This airline has conducted a year-long assault on cabin crew collectively and on many of them as individuals. We will not stand by while this airline bullies our members out of their jobs, and if it takes strike action to bring BA management to its senses, then that is the road we must, regretfully, travel."
A BA spokesman said: "Tony Woodley shook hands with us on an agreement in October and said he would let cabin crew vote on the deal with a recommendation for acceptance.
"Unite has broken this promise and instead has now chosen to create fresh uncertainty for customers and damage the interests of thousands of its own members within British Airways."
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