There’s some growing concern in Europe that a Trump victory in the US election could lead to a decrease in support for Ukraine. Without the US backing them, many European countries might reach for nukes to deter any potential conflicts.
There are a handful of countries with nuclear weapons already, but others might be jumping on the nuke train; these countries include places like Ukraine, Sweden, Romania, Germany (yikes), and Poland might even dip their toe in as well.
Conventional forces take time to build. Exhibit A: the Russians turning to North Korea for shells and ammunition due to production struggles. Nuclear weapons can be thrown together fairly quickly and for relatively cheap. Although, this could get dicey if the Russians want to call anyone’s bluff on this.