The government was widely criticised for its handling of foreign affairs, particularly for allowing the Republic of Corsica, a British ally, to fall to the French during the Corsican Crisis. It was subject to a series of attacks in what became known as the Junius Letters. With the resignation in January 1770 of Grafton himself, Lord Camden, and Lord Granby, Chatham's remaining adherents in the cabinet, the Grafton ministry was replaced by the North ministry under the Chancellor of the Exchequer, Lord North, which was to last until 1782.