* War a real threat and Europe not ready, warns Poland's Tusk BBC.com
* Polish leader warns of 'prewar era,' urges European nations to invest in defense Fox News
* Europe in ‘pre-war era,’ warns Poland’s Prime Minister Tusk, citing Russia’s threat CNN
* Europe must get ready for looming war, Donald Tusk warns The Guardian
* NATO Ally Issues Chilling Warning About 'War' in Europe Newsweek
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