Bosnia Troops Fighting has flared up again in the Balkans, in a demilitarized zone between Kosovo and Macedonia. NATO troops in the area are attempting to suppress that violence between ethnic Albanians and Macedonia security forces. But even as the region heats up, the Bush administration is moving to trim the ranks of Americans now on a peacekeeping mission in neighboring Bosnia. President Bush has said he wants the European Union to shoulder more of the burden in the region. NPR's Tom Gjelten reports.