1.   Iraq frequently tries to shoot down allied planes as it considers the zones violations of its sovereignty.

2.   UN spokesman Major Dacre Holloway said the radar indicated the shells were probably fired by field guns but refused to characterise it as an exclusion zone violation.

3.   Under the terms of the ultimatum, exclusion zone violations can be punished by airstrikes by North Atlantic Treaty Organisation warplanes.

4.   Under the terms of the UN ultimatum, exclusion zone violations can be punished by airstrikes by North Atlantic Treaty Organisation warplanes.

5.   The embargo proposal comes a day after the United Nations and NATO agreed to new airstrike rules in Bosnia to punish exclusion zone violations.