The next three years were dominated by the struggle for political control, exacerbated by economic depression and social unrest. External powers like Austria, Britain and Prussia viewed the Revolution as a threat, leading to the outbreak of the French Revolutionary Wars in April 1792. Disillusionment with Louis XVI led to the establishment of the First French Republic on 22 September 1792, followed by his execution in January 1793. In June, an uprising in Paris replaced the Girondins who dominated the National Assembly with the Committee of Public Safety, headed by Maximilien Robespierre.