Sunday, April 18, 1999 Published at 18:20 GMT 19:20 UK
Belgrade cuts ties with Albania
Five refugees were killed when their car hit a landmine
Yugoslavia has broken off diplomatic relations with Albania, accusing Tirana of complicity in Nato attacks.
In an interview with CNN, the Yugoslav Foreign Minister, Zivadin Jovanovic, accused Albania of carrying out aggression against Yugoslav territory in Kosovo and said there was no purpose in maintaining relations.
Mr Jovanovic said there were permanent attacks across the border by the Albanian army and Kosovo Albanian rebels. He also said large quantities of military equipment were being smuggled into Kosovo.
The attack follows an overnight onslaught on targets including Yugoslavia's second city Novi Sad. An oil refinery was hit in the industrial town in attacks which Serb media called the heaviest yet.
A pall of black smoke loomed over Belgrade after Nato hit three plants in a nearby industrial area.
Nato said in one mission all of the 36 planes involved had found targets - and 13 military vehicles inside Kosovo had been destroyed.
(Click here for a map showing recent Nato strikes)
The first US Apache attack helicopters are expected in Albania shortly for deployment against Yugoslav military forces in Kosovo. Meanwhile, five Kosovo Albanian refugees including three children were killed when their car hit a landmine in the no-man's land between a Serbian check-point and the Albanian border.
Serbian troops were also reported to have shelled a line of refugees, killing one and injuring 22 at the same border crossing at Morina.
Suspected mass graves
Military spokesman Brigadier-General Guiseppe Marani said the alliance also had evidence that Kosovo Albanians had been forced to dig the graves of their countrymen.
Nato also said it believed a notorious Serb militia known as the Tigers was operating around the town of Pec in western Kosovo as part of a new wave of ethnic cleansing.
Their leader, Zeljho Raznatovic or 'Arkan', has been indicted for crimes against humanity by the international war crimes tribunal in The Hague.
'No plans for invasion'
Meanwhile, UK Foreign Secretary Robin Cook has denied a press report that Nato plans to invade Kosovo by the end of the month.
The Observer newspaper quoted a senior sources in London and Washington as saying that 80,000 troops had been earmarked for the operation. But Mr Cook said the alliance had no plans to send in ground troops.
He told GMTV: "Even if we were now to develop such intentions - and we have not - it would be two to three months before we could act upon it because you will need to assemble an area for a very large force capable of carrying out an armed invasion against resistance.
Nato's Secretary General, Javier Solana, said the alliance believed their air campaign was sufficient right now.
"We're going to see this campaign through," he said on BBC One's Breakfast with Frost. "At this point we think that the campaign is enough ... and therefore we're not going to change the policy now.
"But if the moment comes when it is necessary, I'm sure the countries that belong to Nato will be ready to do it."
US President Bill Clinton has said there will be no peace in the Balkans until Yugoslav President Slobodan Milosevic is removed from power.
He said: "Realistically, the realization of this vision will require a democratic transition in Serbia itself, for the region cannot be secure with a belligerent tyrant in its midst."
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