1.   But the talks have been complicated by disputes over the testing of antimissile systems and NATO expansion.

2.   Efforts to settle the strikes here have been complicated by disputes popping up at a growing number of GM factories.

3.   The crime bill dispute complicated health care efforts in the House, too.

4.   The parade dispute has complicated the prospects for the talks.

5.   A territorial dispute has also complicated negotiations.

6.   Trade disputes have long complicated relations between the two former Soviet republics.