Friday, April 30, 1999 Published at 08:40 GMT 09:40 UK
US warns against defying oil embargo
Yugoslavia's oil supply: Key target of Nato air campaign
With the Nato and European Union and American oil embargoes against Yugoslavia due to be put into effect on Friday, US Defence Secretary William Cohen has warned that any country shipping oil to the Serbs faces serious political and economic consequences.
Many countries outside Nato and the EU are joining the embargo. But Russia in particular has failed to agree to adhere to an embargo.
"There will be serious consequences that would flow to countries that would openly and flagrantly supply energy to a regime that has engaged in this kind of brutal behaviour," Mr Cohen said.
Mr Cohen said he hoped that Russia would not try to run any blockade.
Nato is still working out how to enforce the ban.
Nato's supreme commander General Wesley Clark has requested authority for ships suspected of carrying oil to Yugoslavia to be stopped and searched.
"I believe he ... should have whatever flexibility is required for him to achieve his goals," Mr Cohen said.
In some European countries, questions have been raised about the legality the plan.
France says this would require a United Nations mandate, warning that searching and seizing ships by force would be "an act of war" that could bring the alliance in conflict with Russia.
BBC Washington Correspondent Paul Reynolds says it is likely that Nato, which needs a consensus, will mainly tackle the problem at source by trying to persuade countries and companies not to load or ship oil.
Shutting down Yugoslavia's oil supply is a key objective of the Nato air campaign, which has repeatedly struck oil refineries and storage areas.