The kingdom of the Punjab will now become the barrier between Affghanistan and our north-western frontier in India; and it is said that the Sikhs, already in possession of Peshawer and the rich plain extending to the foot of the Khyber mountains, have undertaken in future to occupy the important defiles of this range, and the fort of Ali-Musjid, so as to keep the Affghans within bounds. It seems to us doubtful, however, whether they will be able to maintain themselves long, unaided, in this perilous advanced post: though the national animosity which subsists between them and the Affghans is a sufficient pledge of their good-will for the service--and their co-operation in the late campaign against Cabul has been rendered with a zeal and promptitude affording a strong contrast to their lukewarmness at the beginning of the war, when they conceived its object to be the re-establishment of the monarchy and national unity of their inveterate foes. But the vigour of the Sikh kingdom, and the discipline and efficiency of their troops, have greatly declined in the hands of the present sovereign, Shere Singh, who, though a frank and gallant soldier, has little genius for civil government, and is thwarted and overborne in his measures by the overweening power of the minister, Rajah Dhian Singh, who originally rose to eminence by the favour of Runjeet. At present, our information as to the state of politics in the Punjab is not very explicit, the intelligence from India during several months, having been almost wholly engrossed by the details of the campaign in Affghanistan; but as far as can be gathered from these statements, the country has been brought, by the insubordination of the troops, and the disputes of the Maharajah and his Minister, to a state not far removed from anarchy. It is said that the fortress of Govindghur, where the vast treasures amassed by Runjeet are deposited, has been taken possession of by the malecontent faction, and that Shere Singh has applied for the assistance of our troops to recover it; and the _Delhi Gazette_ even goes so far as to assert that this prince, "disgusted with the perpetual turmoil in which he is embroiled, and feeling his incapacity of ruling his turbulent chieftains, is willing to cede his country to us, and become a pensioner of our Government." But this announcement, though confidently given, we believe to be at least premature. That the Punjab must inevitably, sooner or later, become part of the Anglo-Indian empire, either as a subsidiary power, like the Nizam, or directly, as a province, no one can doubt; but its incorporation at this moment, in the teeth of our late declaration against any further extension of territory, and at the time when the Sikhs are zealously fulfilling their engagements as our allies, would be both injudicious and unpopular in the highest degree. An interview, however, is reported to have been arranged between Lord Ellenborough and Shere Singh, which is to take