LONDON >> Britain has reasserted its sovereignty over the Falkland Islands after Argentina pulled out of a cooperation agreement and demanded new talks over the South Atlantic territory that sparked a 1982 war between the two countries.

The pronouncement came after Argentine Foreign Minister Santiago Cafiero said on Twitter that he informed British Foreign Secretary James Cleverly about his country’s decision at the Group of 20 summit in India recently.

“The Falkland Islands are British,” Cleverly tweeted late Friday. “Islanders ... have chosen to remain a self-governing U.K. Overseas Territory.’’

Earlier, Cafiero said he told Cleverly that Argentina had decided to pull out of a 2016 agreement in which the two countries pledged to work together on a variety of issues. Though that agreement sought to improve cooperation in the South Atlantic, both sides continued to assert their claims to sovereignty over the Falkland Islands.

— The Associated Press