Samsung, HTC, ZTE, LG Electronics and Hon Hai are among the smartphone makers who have signed the licenses with Microsoft.

EU foreign ministers said after a meeting in Brussels that the bloc was ready to penalize anyone blamed for thwarting dialogue.

On U.S. participation in commemorations of the Battle of Gallipoli, Bass said, “It is too early to say how we will be represented.”

The two presidents are also expected to hold talks on the ongoing conflicts in Syria and Iraq, as well as the Israeli-Palestinian issue.