Unfortunately this has already been happening for a decade or more since the NATO "intervention" in Libya and it has little to do with climate change.
A good lesson is to stop propping dictators in exchange for short-term stability. Based on the current events, the EU did not learn that lesson.
"Humanitarian" intervention has always been an excuse to conquer, at least from the times of the Persian Empire or so.
And there have been refugee waves wherever there had been war and famine - that is all over the globe, with nothing explicitly indicating the "western interventions" are outsiders
And concerning Pakistan, former PM Imran Khan stated his fall from power was caused by US interference. That counts as major.