Libya claimed a 200-mile territorial sea zone, placing armed ships to enforce the claim and calling it a "line of death." The UN Security Council condemned Libya's actions as violating international law, which only recognizes 12 nautical miles of territorial waters. Authorized by Congress, the US sent ships and jets to patrol the 200-mile zone. After a Libyan ship fired at a US jet, US forces returned fire and destroyed two Libyan ships.