<sod >Iran could be in a positionÂ to begin creatingÂ nuclear weapons within five days if the US ends a major agreement on uranium enrichment, the countryâs atomic programme head has warned.< eod>< sod > Iran could be in a position to create highly enriched uranium within five days if the US ends a major agreement on nuclear proliferation, the countryâs atomic programme head has warned.< eod>