 It is reported that in the second decade of 14th century, the Lithuanians increased their pressure upon Galicia-Volhynia, eventually wresting away control of Dorohychyn and Berestia.The years of the brothers' "joint" reign were in spent in more-or-less constant conflict with both the Gediminids of Lithuania and with their own nominal overlords, the Mongol-Tatars of the Golden Horde.Lev II and Andrew established firm relations with the Polish High Duke (King) Władysław I (Władysław the Short or Elbow-high; also known as Ladislaus I of Poland, ) and, as already pointed out above, with the crusading knights of the Teutonic Order, as well as striving to lessen the ties of their kingdom's subservience to the Golden Horde.