Saudi Arabia is planning to dig a canal that would turn its Gulf rival Qatar into an island.
Tension between the two states has been brewing for the last year after the kingdom cut diplomatic and trade ties with Qatar and accused it of supporting terrorism.
Saud al-Qahtani, a senior adviser to Crown Prince Mohammed in Salman, confirmed the Salwa Island Project on Twitter.
He said: ‘I am impatiently waiting for details on the implementation of the Salwa island project, a great, historic project that will change the geography of the region.’
The billion dollar channel would be 100 km long and 200 metres wide, stretching across the kingdom’s border with Qatar.
Part of the canal would be reserved for a planned nuclear waste facility.
Five unnamed companies that specialise in digging canals had been invited to bid for the project and the winner will be announced in September, Makkah newspaper reported in June.
The United Arab Emirates, Bahrain and Egypt all cut diplomatic and trade ties with Qatar following the fallout.
Mediation efforts led by Kuwait and the US, which has its largest Middle East air base in Qatar, have so far failed to resolve the dispute.