 The joint incursion, in addition to the Qatari counter-attack, prompted British Political Resident, Colonel Lewis Pelly to impose a settlement in 1868.His mission to Bahrain and Qatar and the resulting peace treaty were milestones because they implicitly recognised the distinctness of Qatar from Bahrain and explicitly acknowledged the position of Mohammed bin Thani.In addition to censuring Bahrain for its breach of agreement, Pelly negotiated with Qatari sheikhs, who were represented by Mohammed bin Thani.