communities, and the languages of speech, politics, and worship to be the
same. How did four modern national ideas arise from a single early modern
one?
Our route through this passage follows the national ideas of the early mod-
ern Commonwealth (–), of the nineteenth-century empires that par-
titioned it (–), and of the independent states and Soviet republics that
supplanted them (–). We will find that the early modern Polish nation
survived partition and prospered under empire, its disintegration beginning in
the late nineteenth century. Even then, modern national ideas emerged in inti-
mate competition with this early modern vision, against a more distant back-
drop of imperial rule. This close contest between traditional patriotism and
ethnic nationalism continued in the new polities established after the First
World War. Although statehood itself forced choices and closed options after
, the newly privileged idea of the modern ethnic nation was not yet hege-
monic. Only the organized violence of the Second World War finally broke the
historical integument in which early modern ideas of nationality could cohere.
Deportations, genocide, and ethnic cleansing destroyed historical regions and
emptied multicultural cities, clearing the way for modern nationalism. The
mass murder and displacement of elites uprooted traditions. In advancing this
claim, this study concentrates upon the wartime experience of Poles and
Ukrainians, and inquires about the causes of their mutual ethnic cleansing.
After four years of Soviet and Nazi occupation, Ukrainians and Poles ethni-
cally cleansed each other for four more. These cleansings claimed more than
, lives, and forced . million resettlements. How did this come to pass?
Is ethnic cleansing caused by nationalism, or does ethnic cleansing nationalize
populations?
Can nation-states come to terms with such history? Can the demands of
modern national ideas, so brutally expressed by ethnic cleansing, find a peace-
ful articulation? These are the questions posed by the s to the s. In the
years following the revolutions of , every imaginable cause of national con-
flict could be found among Poland, Lithuania, Belarus, and Ukraine: imperial
disintegration; frontiers without historical legitimacy; provocative minorities;
revanchist claims; fearful elites; newly democratic politics; memories of ethnic
cleansing; and national myths of eternal conflict. From these beginnings, a Pol-
ish eastern policy aware of modern nationality fashioned a stable geopolitical
order. The collapse of the Soviet Union was anticipated, hastened, and turned
to peaceful ends. The simplest evidence of Polish success was Western igno-
rance of the historical rivalries and wartime cleansings that this book will de-
Introduction
2