The president will stop in Estonia before arriving at the NATO summit in Wales.
Just miles from the Syria-Lebanon border, hundreds of thousands of children, with families and without, have had their school days replaced by hours spent working in fields and factories to earn money.
Survey ranks Switzerland, Singapore, US as world's most competitive economies
Children in Syria are laboring on Lebanese farms to help raise money for their displaced families.
Mexico president announces $9.2 billion airport project for capital, to quadruple capacity
Mayor threatens to close French port to stop growing flux of migrants from crossing to Britain
Ireland's surging tax take eases deficit, signals kinder 2015 budget after 6 years' austerity
Moscow denies reports that Russian soldiers assisted the separatists in the siege.
Thousands flee northeast Nigerian city under siege by Islamic militants, says senator
Journalist Steven Sotloff was previously seen in ISIS video showing execution of American James Foley.