to watch more closely than has hitherto been attempted the progress of events in Afghanistan, and to counteract the progress of Russian influence...The mode of dealing with this very important question, whether by dispatching a confidential agent to Dost Mohammed of Kabul merely to watch the progress of events, or to enter into relations with this Chief, either of a political or merely in the first instance of a commercial character, we confide in your discretion as well as the adoption of any other measures that may appear to you desirable to counteract Russian influence in that quarter, should you be satisfied...that the time has arrived at which it would be right for you to interfere decidedly in the affairs of Afghanistan. Such an interference would doubtless be requisite, either to prevent the extension of Persian dominion in that quarter or to raise a timely barrier against the impending encroachments of Russian influence.