Now this is going to have repercussions

Wasn't this settled back in 1982 - remember it distinctly. England won - end of story. From the UK Guardian:

Falkland Islands lie in Argentinian waters, UN commission rules
Argentina’s government is celebrating a decision by a UN commission to expand its maritime territory in the South Atlantic Ocean by 35% to include the disputed Falkland islands and beyond.

The Argentine foreign ministry said its waters had increased by 1.7 million square km (0.66 million square miles) and the decision will be key in its dispute with Britain over the islands. Argentina lost a brief, bloody 1982 war with Britain after Argentinian troops seized the South Atlantic archipelago that Latin Americans call the Malvinas.

Sigh - here we go again. UN Delenda Est.