Nato's ninth week of air attacks against Yugoslavia began with a public show of unity by the US and Britain. While there were differing signals behind the scenes from alliance countries about the readiness to consider a ground campaign, Nato agreed to increase the number of troops in the Balkans.

Follow the ninth week of the Nato campaign in this day-by-day guide to the best of BBC News Online's coverage.

Use the options on the left to return to latest news and other current BBC coverage.

Build-up to conflict I Week one I Week two I Week three I Week four I Week five I Week six I Week seven I Week eight I Week nine

Troops boost for Nato
Nato increases the military pressure on Belgrade by almost doubling the size of its peacekeeping force destined for Kosovo.

• Milosevic cracking, says Nato chief
  
• UN accuses Serbs of ethnic cleansing
  
• Istok prison's unanswered questions
  
• Nato denies targeting water supplies
  

Nato strikes: Day 62
(24 May)

Serbia's water and power hit
Nato bombers again hit power facilities in Serbia, causing shortages of electricity and water throughout the country.

• War crimes investigator sent to Albania
• General sent to stop troop mutiny
• Refugees surge across border
• Allies 'united' on Kosovo troops
• Milosevic must go, says Montenegrin president

Nato steps up strikes
Clear skies over Serbia in the past 24 hours have enabled Nato air-crews to press home attacks against a wide range of Serb targets.

• Hundreds walk to freedom
• Allies 'united' on Kosovo troops
• Short: No going soft on fascism
• Day 61 in pictures

Nato admits bombing KLA
Nato has admitted it bombed a position held by the rebel Kosovo Liberation Army by mistake in its latest raids against Yugoslavia.

• 'Long exile' for Kosovo refugees
• Nato: Prison bombing justified
• Nato's F-18s deploy in Hungary
• Eyewitness: View from a hospital bed
• Fishermen protest at bombs in Adriatic

Nato bombs Kosovo prison
Nato has confirmed it carried out a bombing mission in an area of Kosovo where the Serbs say a prison was attacked killing 19 people.

• 'No closer allies' than UK and US
• Eyewitness: Children's tales of horror
• Anti-Yugoslav protest in Montenegro
• Montenegro accuses Yugoslav army of coup plot

Nato bombs hospital
Serbian officials say a Nato missile killed at least three patients in a Belgrade hospital during the alliance's biggest attack on the city for two weeks.

• Cook visits US to show 'Nato unity'
• Eyewitness: Fighting for a foreign land
• Desertions - the lessons of wars past

'Desertions' hit Serb forces
Hundreds of Serbian reservists based in Kosovo return home without orders, reliable sources tell the BBC.

• Serbian protesters on treason charge
• US produces massacre 'proof'
• Annan sees refugee crisis first-hand
• Eyewitness: The refugees who stayed behind

Attacks intensify
Day-by-day coverage of the eighth week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Yeltsin threatens talks, Nato to step up action, alliance admits village bombing, ground troops options assessed, Nato differences emerge. Back to top

Chinese embassy hit
Day-by-day coverage of the seventh week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Clinton's call to arms, G8 peace plan agreed, Nato missiles hit Chinese embassy, Chinese protests, China makes peace demands, Serbs report pull-out, Yeltsin threatens talks. Back to top

Russia's push for peace
Day-by-day coverage of the sixth week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Yugoslav Deputy Premier Draskovic fired, Nato strike kills civilians, Belgrade hit by blitz, Nato bomb hits bus, US prisoners freed, 'soft' bomb hits power supply, Kosovo solution 'closer', Clinton's call to battle. Back to top

Nato tightens grip
Day-by-day coverage of the fifth week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Nato hits Milosevic party HQ and residence, Nato missile hits Serbian TV, Montenegro warns of destbilisation, leaders at Nato 50th anniversary summit vow to press on with campaign. Back to top

Refugees hit
Day-by-day coverage of the fourth week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Refugees killed as Nato hits convoys, raids widen across Yugoslavia, US holds Yugoslav prisoner, Nato says ethnic cleansing spreading. Back to top

Nato reinforces
Day-by-day coverage of the third week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Heaviest raids so far, large-scale reinforcements sent for, civilians killed as passenger train hit, Nato ground troops to Albania for relief efforts. Back to top

Refugee exodus
Day-by-day coverage of the second week of Nato's air campaign, with links to original stories, transcripts, BBC audio and video reports.
BBC reports include: Raids intensify with central Belgrade and key bridges hit, refugees pour out of Kosovo creating a massive humanitarian crisis for its neighbours, Serbia seizes three US soldiers. Back to top

Serbia bombed
Full BBC coverage of the first week of Nato's action with links to original stories, transcripts + BBC audio and video reports.
BBC reports include: First raids, reports of scorched earth policy in Kosovo, Nato loses Stealth fighter, refugees tell stories of atrocities, Nato starts round-the-clock air attacks, Russian mediation comes to nothing. Back to top