pseudo-nationalism
Pseudo Nationalism simply means, nationalism(showing love for your nation) which is fake (not real). It has nothing to do with favoring enemy or any other country.

The reason for Pseudo nationalism (fake patriotism) could be anything. May be they are agents of enemy country or may be just do not care about the country they are citizens of.
pseudo-nationalism is just taking pride for other people's achievements towards our country while talking shit to anyone criticizes your country.