STORY: Regional unrest has intensified following April elections that the ethnic Serbs boycotted, narrowing the turnout to 3.5% and leaving victory in four Serb-majority Kosovan mayoralties to ethnic Albanian candidates.

Those ethnic Albanian mayors were then installed last week, a decision that spurred rebuke of Pristina by the U.S. and its allies on Friday.

At least 30 NATO troops and 52 ethnic Serbian protesters were hurt in clashes Monday. NATO said it would send 700 more troops to Kosovo to boost its 4,000-strong mission. It was not clear when the soldiers would arrive.

While he did not provide a specific timeline, he mentioned the possibility of organizing early elections.