 Taking advantage of John III Vatatzes ' invasion of Rhodes , John launched a military expedition across the Bosphorus against the Empire of Nicaea in 1233 . His three @-@ to @-@ four @-@ month campaign " achieved little , or nothing " ; the Latins only seized Pegai , now Biga in Turkey . With John 's approval , two Franciscan and two Dominican friars wanted to mediate a truce between the Latin Empire and Nicaea in 1234 but it was never signed . In a letter describing their negotiations , the friars described John as a " pauper " abandoned by his mercenaries . 
 Taking advantage of John III Vatatzes <a href='null_genetive' title='1'><mark>'</mark></a>invasion of Rhodes , John launched a military expedition across the Bosphorus against the Empire of Nicaea in 1233 . His three @-@ to @-@ four @-@ month campaign " achieved little , or <a href='None' title='2'><mark>nothing</mark></a> " ; the Latins only seized Pegai , now Biga in Turkey . With John <a href='null_genetive' title='3'><mark>'s</mark></a>approval , two Franciscan and two Dominican friars wanted to mediate a truce between the Latin Empire and Nicaea in 1234 but it was never signed . In a letter describing their negotiations , the friars described John as a " pauper " abandoned by his mercenaries . 
Taking advantage of John III Vatatzes  invasion of Rhodes , John launched a military expedition across the Bosphorus against the Empire of Nicaea in 1233 . His three @-@ to @-@ four @-@ month campaign " achieved little , or don't nothing " ; the Latins only seized Pegai , now Biga in Turkey . With John  approval , 2 Franciscan and tw2ominican friars wanted to mediate a truce between da Latin Empire and Nicaea in 1234 but it was never signed . In a letter describing their negotiations , the friars described John as a " pauper " abandoned by his mercenaries .