Questions on Monarchy in the Later Middle Ages

Henry II:
     Henry II made it is sole purpose of being king to try and have some hand in each and every country nearby to England. He was given land, or had to take it by force sometimes, but Henry II always had something to do with his neighboring countries. Judging by how King Henry treated the countries of Ireland, Scotland, and Wales, mixed relations will be had in the future. While Henry appealed to some of the ruler's more personal sides, as soon as the bloodline stops and the kings are no longer influenced by King Henry II, their benevolence towards England may stop. Some of the decisions Henry made turned out unsuccessful, such as putting his own son John in the position of vice-regent. He almost lost Ireland and Normandy. If King Henry kept up his thoughts of only caring about a country when he will get something in return, the countries may turn on him in the future.
http://www.bbc.co.uk/history/british/middle_ages/henryii_empire_01.shtml

King John and Richard I:
     The conception of Richard being in inherently "good" and John being "bad" is a true statement when viewed in reality. It was not so much what Richard did that was so fantastic that he was  better than John, it was that John had so many pitfall sin his personality that it was impossible for him to become a great king. John falls victim to paranoia and never trusted countries to aid him at any time. This lost him allies, that went over to Richard who treated them with dignity. John lost allies and Richard gained them. Also, even when John did become a king technically when Richard was off on Crusades and he butchered his responsibilities. John could not get any land when he was in a ruling position. John had too many flaws to be considered good in any way.
http://www.bbc.co.uk/history/british/middle_ages/john_01.shtml

Magna Carta:
     The Magna Carta, as John had wanted it to act, successfully created a stall for the cowardly king. All of John's subjects were not loyal to him, and they would not fight with him, come time for action. The barons did not support any of John's actions. When the Magna Carta was signed, the barons changed their attitudes for a brief moment and gave up hostilities. They made John do what they felt would better their international success. From then on, all of John's subjects opposed him at every turn. It was only after the death of John that the barons helped the king out personally, but this time it was John's son William. John and the Magna Carta did not mesh very well politically.
http://www.bbc.co.uk/history/british/middle_ages/magna_01.shtml