London, Jan. 20 -- A 2025 deal between the UK and Mauritius to hand over the Chagos Islands "secures the operations of the joint U.S.-UK base" there, British media quoted a British government spokesperson as saying on Tuesday.

This came after U.S. President Donald Trump accused the act of "great stupidity" earlier on Tuesday.

"Shockingly, our 'brilliant' NATO Ally, the United Kingdom, is currently planning to give away the Island of Diego Garcia, the site of a vital U.S. Military Base, to Mauritius, and to do so FOR NO REASON WHATSOEVER," Trump posted on social media.

"The UK giving away extremely important land is an act of GREAT STUPIDITY, and is another in a very long line of National Security reasons why Greenland has to be acquired,...