Sentence:  ... Greece was truly 'in a league of its own', with its combination of persistent fiscal imbalances and protracted losses of competitiveness. At the bottom of this was a peculiar form of <WSD>ostrichism</WSD>, an ostrich-like behaviour, eagerly adopted by Greek policy makers; in fact, they buried their heads in the ground, almost uninterrupted, until well into 2009. Routine deviation from targets, over-optimistic assessment of planned procedures and missed timetables quickly came to define the Greek approach to its obligations under the Stability and Growth Pact. 
Meaning of the word marked with <WSD> tags:  A policy of burying one's head in the sand, that is, ignoring the reality of a situation. (from mid 19th c.)