Battle of Bileća
... that the Kingdom of Bosnia allowed the Ottoman Turks to penetrate deep into their territory before inflicting a heavy defeat on them at the 1388 Battle of Bileća?
... that the <a href="./Kingdom_of_Bosnia" id="mwBdQ" rel="mw:WikiLink" title="Kingdom of Bosnia">Kingdom of Bosnia</a> allowed the Ottoman Turks to penetrate deep into their territory before inflicting a heavy defeat on them at the 1388 <b id="mwBdU"><a href="./Battle_of_Bileća" id="mwBdY" rel="mw:WikiLink" title="Battle of Bileća">Battle of Bileća</a></b>?