Sunderland's relations with Paul Barillon, whose long tenure as Ambassador from Louis XIV (from 1677 to 1688) produced many memorable exchanges between the twain, were tenuous and strained. When Louis failed to give James any assistance against the Monmouth Rebellion of 1685, Sunderland told Barillon sharply "the King your master may have plans I cannot discern, but I hope he will put things right by making it clear that this has all been a misunderstanding". When Barillon protested that his master's aim was "the Peace of Europe" Sunderland said that it was impossible for everyone in Europe to want peace at the same time: "myself I think it will last until one side or the other has a good reason for breaking it". To prevent Barillon from gaining too much influence, Sunderland intercepted and leaked an unusually indiscreet dispatch where the Ambassador boasted of having blocked an Anglo-Dutch treaty. Charles II was predictably furious, and Barillon was for a time forbidden the Court. Sunderland remarked that if Barillon would behave himself so, it was "but just that it come home to him".