How long for Poland to produce their own nuclear weapons and the IRBMs to deliver them?

First they have to make the decision to proceed. That depends on US decisiveness. We need to step up and put them seriously under the umbrella – NATO won’t do. Do anyone think the Germans will invest in defense and be willing to die for Polish freedom? That would be a switch!

Once the Poles decide they have to look to their own freedom, a crash program of indigenous fissile material production, weapon design, and IRBM manufacturing could field a credible deterrent force in maybe 4 years.

Surprisingly, the Romanians have a big head start. They own several operating CANDU reactors that can be reprogrammed to crank out weapons-grade plutonium. In a year they could be making pits.