It's not an immediate threat in the sense of a pandemic for example, I agree. Though it is a forseable outcome and rapid enough as to be a cause for concern. Essentially yes. Unlike previous events in history in which ethnic groups were assimilated and or destroyed by an invading force with clear intentions of domination. White nations for the most part have comfort in the geopolitical world, they are not threatened by military invasion. Low birth rates, laissez faire attitude towards immigration and a weighing sense of ethnic identity will be the downfall of white nations.