Mauritius said talks with the UK had yielded a draft final accord that will secure it control over the Chagos archipelago, a deal that still needs the go-ahead from the new US administration headed by President Donald Trump.

“We are satisfied that these negotiations have resulted in the drafting of a final document,” Mauritian Attorney General Gavin Glover said in an interview with the state-owned broadcaster on Sunday. “The treaty itself, in its final form, could therefore be signed if everybody agrees and is prepared to sign.”

His comments followed renewed negotiations over the sovereignty of the Chagos islands that were held after a new Mauritian government led by Prime Minister Navinchandra Ramgoolam sought improved terms and conditions from the UK. The two nations last week said they’d made “good progress” in ironing out outstanding issues.

ALSO READ: Mauritius to regain sovereignty over Chagos Archipelago from Britain

The UK has controlled Chagos for more than two centuries. The largest island in the archipelago is Diego Garcia, the site of a key joint US-UK military base since the 1970s.

The UK in October announced a deal to hand over sovereignty of the Indian Ocean islands, while maintaining a 99-year lease over the base. Ramgoolam, who served as premier from 2005 to 2014, criticized the terms and reopened talks after securing another term in November.

The agreement was meant to be signed on Jan 18, according to Glover, but UK Prime Minister Keir Starmer’s government last week said it would need to wait for Trump’s administration to look over the final document before it was ratified.

READ MORE: World Court weighs Britain's claim to Chagos Islands

“We need to be realistic. The base is American and British. So we understand why Mr Starmer wants Mr Trump to have a look at the document before it is signed,” Glover said. “We are somehow at the mercy of what the Americans will tell the British and that’s a little unfortunate. But we remain confident that things will go well and that the agreement will be signed in the weeks to come.”

While some key details of the accord haven’t been disclosed, it includes a provision for the UK to make an annual lease payment for Diego Garcia — which Mauritian media have reported may amount to as much as £90 million ($110 million a year).

The funds would be “of substantial help” to Mauritius, though the UK wanted to keep the lease amount secret, Ramgoolam said in an interview with the Mauritius-based Week-End newspaper on Sunday.

The UK is willing to front-load the first seven years of annual lease payments and earmark funds for development projects. A second lump sum would be disbursed after three years, according to people familiar with the matter.