The Campaign against Dong Zhuo was a punitive expedition initiated by a coalition of regional officials and warlords against the warlord Dong Zhuo in 190 in the late Eastern Han dynasty. The members of the coalition claimed that Dong had the intention of usurping the throne by holding Emperor Xian hostage and by establishing a strong influence in the imperial court. They justified their campaign as to remove Dong from power. The campaign led to the evacuation of the capital Luoyang and the shifting of the imperial court to Chang'an. It was a prelude to the end of the Han dynasty and, subsequently, the Three Kingdoms period.