Geopolitics is very unpredictable.

My part of the world is given a "grasslands" climate classification.

In dry years, like last year, we get few mosquitoes. The mosquito eggs stay as eggs until there's enough moisture in the ground to support larvae. Apparently these eggs can last 7-10 years in a dry state.

In wet years, the eggs hatch.

This year has been a wet spring and early summer. So far, few mosquitoes. This might be our black swan.