Mariah Carey is shipping off to Kosovo.

The pop diva will fly to the Balkans later this week in a USO-sponsored trip to boost the morale of U.S. troops who are unable to be with their families this holiday season.

The singer was already in Europe to promote her Glitter album and her greatest-hits compilation. She decided to perform in Kosovo shortly before her November 30 Top of the Pops Awards appearance in Manchester, England. Her statement coincided with an announcement that Jennifer Lopez, Kid Rock and Ja Rule would play a concert for U.S. servicemen and women at an undisclosed military base (see "J. Lo, Kid Rock, Ja Rule To Entertain Overseas Troops").

Carey's Kosovo concert will be staged right on the front lines, her publicist said. Carey will likely perform four or five songs, and the show is expected to draw thousands of lonely soldiers.

In addition to performing to the base in Kosovo, Carey will be flown by helicopter to four remote military locations to visit other troops.

After returning to the states, she will play four radio station concerts at New York's Madison Square Garden. Her December 18 appearance at WKTU's Miracle on 34th Street fest also features Alicia Keys, Craig David, Enrique Iglesias, Mya, Shaggy, Shakira and others.

For a full-length Mariah Carey interview, check out "Mariah Carey: Looking Out For #1."