There are a lot of perks to being a world leader. Attending far-flung conferences, it’s safe to say, is not one of them. But however much Barack Obama and his counterparts grouse about jet lag, global summits will continue to play an indispensable part in governing an unruly world. Even when overly choreographed and scripted, these events give presidents and prime ministers a rare opportunity to establish a personal rapport, speak candidly on tough items, and break logjams to international cooperation. In the latest Council of Councils Global Memo, I preview seven summits to watch in 2015.