A tax break given to Boeing to develop a new airliner has been ruled a banned subsidy by the World Trade Organisation. The decision saw both Boeing and European rival Airbus claiming a victory in the long-running battle between the plane-makers. The WTO said Washington State gave the plane-maker a prohibited subsidy by halving the tax rate in an inducement to develop the company’s 777X airliner there. For more, Howard Wheeldon, of Wheeldon Strategic, joined Share Radio Breakfast to discuss.