But the war on the continent was not closed by Henry's success in England. His sons were still in arms against him, and during his absence the king of France with the young Henry and the Count of Flanders had laid siege to Rouen. Though the blockade was incomplete, an attack on the chief city of Normandy could not be disregarded. Evidently that was Henry's opinion, for on August 6 he crossed the channel, taking with him his Brabantine soldiers and a force of Welshmen, as well as his prisoners including the king of Scotland. He entered Rouen without difficulty, and by his vigorous measures immediately convinced the besiegers that all hope of taking the city was over. King Louis, who was without military genius or spirit, and not at all a match for Henry, gave up the enterprise at once, burned his siege engines, and decamped ignominiously in the night. Then came messengers to Henry and proposed a conference to settle terms of peace, but at the meeting which was held on September 8 nothing could be agreed upon because of the absence of Richard who was in Aquitaine still carrying on the war. The negotiations were accordingly adjourned till Michaelmas on the understanding that Henry should subdue his son and compel him to attend and that the other side should give the young rebel no aid. Richard at first intended some resistance to his father, but after losing some of the places that held for him and a little experience of fleeing from one castle to another, he lost heart and threw himself on his father's mercy, to be received with the easy forgiveness which characterized Henry's attitude toward his children.