Both the Imperial Austrian Ambassador in London, Count Wratislaw, and the Duke of Marlborough realised the implications of the situation on the Danube. The Dutch were against any adventurous military operation as far south as the Danube and would not permit any major weakening of the forces in the Spanish Netherlands. Marlborough, realising the only way to reinforce the Austrians was by the use of secrecy and guile, set out to deceive his Dutch allies by pretending to move his troops to the Moselle – a plan approved of by The Hague – but once there, he would slip the Dutch leash and link up with Austrian forces in southern Germany.