Europe

Oil firm active in Falklands sees shares hit by UN decision

FILE - In this Sept. 18, 2015 file photo, the Malvinas Museum features rocks in the shape of Malvinas, or Falkland Islands, in Buenos Aires, Argentina. Argentina’s government celebrated on Monday, March 28, 2016 a decision by a U.N. commission expanding its maritime territory in the South Atlantic Ocean to include the disputed islands and beyond. The Argentine foreign ministry said the decision will be key in its dispute with Britain over the Islands. Argentina lost the 1982 war with Britain after Argentine troops seized the South Atlantic archipelago. (AP Photo/Natacha Pisarenko, File)

FILE - In this Sept. 18, 2015 file photo, the Malvinas Museum features rocks in the shape of Malvinas, or Falkland Islands, in Buenos Aires, Argentina. Argentina’s government celebrated on Monday, March 28, 2016 a decision by a U.N. commission expanding its maritime territory in the South Atlantic Ocean to include the disputed islands and beyond. The Argentine foreign ministry said the decision will be key in its dispute with Britain over the Islands. Argentina lost the 1982 war with Britain after Argentine troops seized the South Atlantic archipelago. (AP Photo/Natacha Pisarenko, File)  (The Associated Press)

Shares in a U.K. oil company with interests in the Falklands have slumped after a U.N. decision that Argentina claims will expand its maritime territory in the South Atlantic Ocean to include the islands.

Rockhopper Exploration PLC shares were down 5.3 percent to 27.00 pence early Tuesday after Argentina said the U.N. Commission on the Limits of the Continental Shelf sided with Buenos Aires.

Argentina says its maritime territory has expanded by 35 percent to include what it calls the Malvinas. Britain, which is responsible for defense and foreign affairs for the islands, has not yet commented.

The Falkland Islands government is seeking clarification from the U.K. on the implications of the U.N. ruling.

Argentina lost a 1982 war with Britain after Argentine troops seized the South Atlantic archipelago.