With the collapse of Rambouillet peace talks, Nato launches its threatened bombing campaign against Yugoslavia.
THURSDAY 1 APRIL
A biblical tide of refugees begins flooding into Albania, Macedonia and Montenegro. Around 200,000 people have been forced to leave since the campaign began.
MONDAY 12 APRIL
The first significant Nato blunder: alliance jets hit a passenger train as it crosses a bridge in southern Serbia, killing at least 10 people.
WEDNESDAY 14 APRIL
Alliance fighters attack a convoy of Kosovar refugees along the Prizren- Djakovica road, leaving at least 60 casualties. Yugoslavia calls it a "crime against humanity".
FRIDAY 23 APRIL
Nato's 50th anniversary gathering in Washington. Upset by Serbian propaganda, Nato bombs the state television headquarters killing at least 10.
TUESDAY 4 MAY
General Klaus Naumann, Nato's senior military official, concedes that the alliance has failed in its initial war aims.
SATURDAY 8 MAY
Nato bombs Chinese embassy in Belgrade, killing four people. Nato apologises, blaming faulty CIA intelligence. Angry mobs in Peking stone US embassy.
FRIDAY 14 MAY
Nato is accused of killing 87 refugees in Korisa. Nato claims the refugees were being used as human shields for a "legitimate military target".
FRIDAY 21 MAY
US announces a shift in thinking on ground forces, sensing Milosevic's grip on power may be faltering with reports of anti-war rioting and 1,000 Serb troops deserting their units.
SATURDAY 22 MAY
Nato takes advantage of clear skies to launch its most intensive bombardment on the 60th day of conflict, attacking a presidential retreat, power installations, ammunition dumps, bridges and army barracks.
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