King John reacted to the barons' demands with a mixture of anger, defiance, and negotiation. Initially, he was dismissive of their demands, refusing to make concessions and asserting his royal authority. However, as the barons became more organized and threatened to rebel, John was forced to take their demands more seriously. He eventually agreed to meet with the barons at Runnymede in 1215 and sign the Magna Carta, a charter that limited the power of the monarchy and established certain rights for the barons and all free men. Although John later attempted to repudiate the Magna Carta, it remained an important symbol of the struggle for individual liberties and the rule of law in England.