President Obama hosted back-to-back summits from Friday at Camp David until today in Chicago. The G8 agreed that Greece should stay in the Eurozone, but the battle over "growth versus austerity" is far from over. NATO leaders agreed to pull troops out of Afghanistan by the end of 2014, with President Obama insisting that "stabilizing" that country remains a "vital" priority. Will NATO provide the funding required for local police and a national army? Are such meetings all that useful? Did the President get what he wanted? Will the US have to live with continued uncertainty in a rapidly changing world?