No, the country map and license are separate from each other. In non-Nokia Windows phones the supported regions with HERE Drive depend on the country code of the SIM card. You are licensed to use the navigation only in the supported regions. You can check your supported regions in Settings > Navigation license in HERE Drive.
If you have Nokia Lumia phone with HERE Drive+ there's no restrictions with navigation support, navigation is supported in all countries for which navigable map data is available.