Four trips already have their main stops set: Obama will be in Japan for a G-7 meeting in June, in Poland for the NATO summit in July, in China for the G-20 meeting in September, and likely in Peru for the Asia-Pacific Economic Cooperation summit in November, after the presidential election.

Obama said during a July meeting in the Oval Office with Vietnamese Communist Party General Secretary Nguyen Phu Trong that he’s looking forward to visiting the Southeast Asian nation, and aides say they expect him to make good on that, probably as part of one of the Asia trips.

Brazilian President Dilma Rousseff also gave Obama a “standing invitation” to come to Rio de Janeiro for the Olympics in August, and though several White House aides say they’re hoping to go, that trip hasn’t yet been scheduled.

And then there’s the possibility of a trip to Cuba, widely expected but so far still tentative. Obama has said openly that he wants to go, and the White House is working behind the scenes to make it happen.