Christian IV sought to become the leader of the north German Lutheran states, however following the Battle of Lutter in 1626 Denmark met a crushing defeat. This led to most of the German Protestant states ceasing their support for Christian IV. After another defeat at the Battle of Wolgast and following the Treaty of Lübeck in 1629, which forbade Denmark–Norway from future intervening in German affairs, Denmark–Norways's participation in the war came to an end.