«He will also be listening to their perspectives on growing security challenges in the region,» she said.
An aide said the 62-year-old Bush, who is the brother of former President George W. Bush, has yet to decide whether to run for president. Other sources close to Bush's camp have said his team has discussed the possibility of an announcement in June, after the trip.
David Yepsen, director of the Paul Simon Public Policy Institute at Southern Illinois University, said Bush's trip is significant because foreign policy and military affairs are playing a more important role in the 2016 campaign than they did in 2008 and 2012.
But, he said, Bush should be cautious because it is easy to make mistakes on a global stage. «It can backfire on you,» he said.
In recent months two rivals, Wisconsin Governor Scott Walker and New Jersey Governor Chris Christie, traveled to Europe, where Walker stumbled on the subject of evolution and Christie drew criticism for offering no insight into how he would conduct foreign policy.
In 2012, then Republican nominee Mitt Romney visited London, Jerusalem and Poland in a trip that was noteworthy for a number of gaffes.
Bush would be in the top tier of contenders for the Republican nomination if he decided to run, but he has been unable to break away from a host of rivals in national polls of Republicans. A CNN/ORC opinion poll released on Monday showed him leading the pack with 17 percent support, and Walker in second place with 12 percent.