the non-intervention policy previously declared by the foreign office, then held by Lord Aberdeen, eventually withdrew, largerly under Rosas' terms. The British mission is assessed a failure, that exposed both home and abroad the British weakness to deal with "half-civilised governments". References Bibliography Cady, John Frank. Foreign Intervention in the Rio de la Plata, 1838-50: A Study of French, British, and American Policy in Relation to the Dictator Juan Manuel Rosas (University of Pennsylvania Press, 1929). External links Wars involving Argentina Wars involving the United Kingdom Wars involving France Maritime history of Argentina Argentina–United Kingdom military relations France–Uruguay relations United Kingdom–Uruguay relations Argentina–France military relations Campaigns of the Argentine Civil War Uruguayan Civil War Blockades Blockades involving the United Kingdom 1845 in Argentina 1846 in Argentina 1847 in Argentina 1848 in Argentina 1849 in Argentina 1850 in Argentina 1845 in Uruguay 1846 in Uruguay 1847 in Uruguay 1848 in Uruguay 1849 in Uruguay 1850 in Uruguay 1840s conflicts Conflicts in 1850 19th-century military history of the United Kingdom