With tensions rising in North Korea what do you think a European response would be if conflict broke out?

What kind of conflict? That is, how how did Korean War was conducted during last months of the conflict?

Was it several battles around 38th north without any of sides progressing? Essentially trench warfare, but with less casualties than in World War I?

Historically reignited conflicts are much less bloody in first months than previous engagement during the last.

Given that, South Korea is more than likely prevail using its own armed forces leaving hundreds of own troops and civilian dead, much more dead North Koreans, new DMZ in the similar place and North Korea even more miserable.

European countries would fold much of economic cooperation with the South and evacuate the expats.