(Reuters) - 1/STERLING BULLS UNLEASHED Sterling bulls could be forgiven if they thought Christmas had arrived early.Deadlocked for months over Brexit, British Prime Minister Boris Johnson and his Irish counterpart Leo Varadkar now say they "see a pathway to a possible deal". The pound has witnessed its biggest two-day jump in more than three years, as investors slash some of their extreme short sterling bets. Expectations for an interest rate cut are falling too, as a positive Brexit outcome..