After the fall of Lord John Russell's Whig government in early 1852, the Tory leader Lord Derby formed a government. The Conservatives had been weakened by the defection of the Peelites, and many of the new Cabinet ministers were men of little experience. The government became known as the Who? Who? Ministry due to the lack of prominence of its ministers. The government was in a significant minority, and lasted less than a year, collapsing in December. The Whigs and Peelites then formed a coalition government under the Peelite leader Lord Aberdeen.