What does Byzantine Power mean?

Byzantine Power meaning in Urban Dictionary

Doing or saying anything that reminds someone of an occasion when Western civilisation was not packed with relativist, damp, floppy, angst-ridden, anti-capitalist, Palestine-supporting, multiculturalist pro-EUrs and in the place of a period whenever Christian morality, Roman legislation, Greek believed and monoculturalism produced and preserved an Empire from 753BC to 1453AD.