First Minister, if the rate-limiting factor is supply—and the health Minister just said that that was true across all of the nations—what it then explains is the differential rate of vaccination in Wales compared to, as we've heard, the UK as a whole, England and Northern Ireland in particular. If it's the same rate of supply across these nations, then why are we seeing a differential rate, a gap between the rate of vaccination in Wales? We haven't really heard, to my mind, a coherent, clear answer to that question. So, can you give it to us now?