BBC World News

1. Swiss bar fire likely started by sparklers on champagne bottles

   The investigation into the fire that killed 40 people will consider whether criminal prosecutions are necessary, officials said.

2. 'Living a nightmare': Families of teens missing after ski resort fire desperate for news

   Families are appealing for information about children as young as 15 who are thought to have been at the bar.

3. Trump warns US will intervene if Iran kills protesters

   The US president says "we will come to their rescue" after days of demonstrations and clashes.

4. Zelensky names spy chief to head presidential office after corruption row

   Kyrylo Budanov has led the Hur military intelligence, which has claimed a number of highly-effective strikes against Russia.

5. Yemen clashes bring Saudi- and UAE-backed forces into confrontation

   The powerful Gulf allies back rival sides in an escalating conflict which threatens to divide Yemen.