The behaviour of an adventurer; risk-taking. from 19th c.
(politics) The taking of excessive risks by a government in their political, economic or foreign affairs. from 20th c.
2002, Colin Jones, The Great Nation, Penguin 2003, p. 133:The rejection of foreign adventurism derived partly from an awareness of the dynastic vulnerability of the Bourbon line, partly from the country's economic as well as its military fragility – and partly too from the increasingly evident limitations of France's traditional international allies.