In light of continuing threats we should build it ourselves.
Initial design (not for kids)
£20,000,000 for more detailed plans and enough chicken wire to protect reactor exhaust ports.
£543,000,000,000,000,00 ($850,000,000,000,000,000) to secure full funding for actual construction.
To keep costs lower the entire project will use open source hardware and software.
FJP: Make it so.