<a href="https://en.wikipedia.org/wiki/Maurice's_Balkan_campaigns#Renewed_campaigns_(597–602)" id="mwEQ" rel="mw:WikiLink" title="Maurice's Balkan campaigns">Avar–Byzantine wars</a>: The <a href="https://en.wikipedia.org/wiki/Pannonian_Avars" id="mwEg" rel="mw:WikiLink" title="Pannonian Avars">Avars</a> lift the <a href="https://en.wikipedia.org/wiki/Siege" id="mwEw" rel="mw:WikiLink" title="Siege">siege</a> at the <a href="https://en.wikipedia.org/wiki/Byzantine_Empire" id="mwFA" rel="mw:WikiLink" title="Byzantine Empire">Byzantine</a> stronghold of <a href="https://en.wikipedia.org/wiki/Constanța" id="mwFQ" rel="mw:WikiLink" title="Constanța">Tomis</a>. Their leader <a href="https://en.wikipedia.org/wiki/Bayan_I" id="mwFg" rel="mw:WikiLink" title="Bayan I">Bayan I</a> retreats north of the <a href="https://en.wikipedia.org/wiki/Danube" id="mwFw" rel="mw:WikiLink" title="Danube">Danube River</a> after the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Avar_Khaganate" id="mwGA" rel="mw:WikiLink" title="Avar Khaganate">Avaro</a>-<a href="https://en.wikipedia.org/wiki/Slavs" id="mwGQ" rel="mw:WikiLink" title="Slavs">Slavic</a> army is decimated by the <a href="https://en.wikipedia.org/wiki/Plague_(disease)" id="mwGg" rel="mw:WikiLink" title="Plague (disease)">plague</a>.