DEFENCE secretary Philip Hammond has threatened to block the proposed merger between BAE Systems and EADS, unless the French and German governments reduce their stakes in EADS.The government could derail the merger by using its "golden share" in the business which allows it to block any change of control.Speaking on BBC Radio 4 Mr Hammond said: "We have made very clear that we do have red lines around the BAE-EADS merger and that if they can't be satisfied, then we will use our special share to veto the deal."It is not, I think, ne......for the full story register now for free or login below...