This what happens when a failed state meets global warming. An estimated one-tenth of Derna's population is still missing after last Sunday's failure of two 1970s-era dams in the Libyan city. Libya has been divided in half over the past decade by rival factions, meaning that no authority issued warnings over Storm Daniel, which drew on record water temperatures in the Mediterranean to pummel the country with rainfall. Libya's disaster came a day after Morocco's biggest earthquake in a century.

When the week began, it was all about France defying an ultimatum by Niger's coup leaders to recall its ambassador. Now, another precinct has been heard from. A twin surprise came from Gabon overnight on Wednesday, with military brass cancelling the flawed re-election to a third term of President Ali Bongo. Instead, a coup ended a 55-year old father-son dynasty in that oil-rich Central African nation. Quick to emerge from the pack was the head of the Republican Guard, General Brice Oligui Nguema – himself a cousin of the Bongos.

This week's NATO summit was almost a one-man show starring someone whose country is not yet a member of the Alliance: Volodymyr Zelensky. Also this week, Narendra Modi was guest of honour at the Bastille Day military parade in Paris. India's prime minister looked on proudly as Indian soldiers joined the annual July 14 parade down the Champs-Élysées.

Where is Yevgeny Prigozhin? Belarus's president claims he is decamped back to Russia, but no one has seen him in public since that aborted march on Moscow. This as Russian state TV shows images of police raids on his home. Also, could it have gone either way? Senegal's president foregoes a run for re-election, but Macky Sall insists his constitutional reform did not bar him from another term. We ask how much of an outlier that makes him among African leaders. Plus, we discuss the limits of France's colourblind attitude to race.

Yevgeny Prigozhin cheered as he suddenly lifted his occupation of Rostov-on-Don last Saturday night and aborted his Wagner Group's march on Moscow, a challenge unseen by the Kremlin since the failed 1991 coup attempt against Mikhail Gorbachev. Also, France is in shock after a viral video showed a police officer shoot and kill a 17-year-old in the Paris suburb of Nanterre. In scenes reminiscent of the three weeks of rioting back in 2005, nightly clashes have engulfed the country's working class suburbs. There's no state of emergency yet but after calling the killing of Nahel "inexplicable" and "inexcusable", President Emmanuel Macron has turned his sights on the rioters.

For four days, the world waited on word of the tourist submersible and the five people inside who had gone to explore the wreckage of the Titanic. On Thursday, the US Coast Guard announced the tragic news that there were no survivors following a "catastrophic implosion". It wasn't just billionaires aboard: highly respected French explorer Paul-Henri Nargeolet was known as "Mr Titanic" and was part of the early teams that first filmed the wreckage of the ill-fated cruise liner back in 1986.

It was the kind of send-off that Donald Trump and Boris Johnson would surely love: a packed house and a packed piazza outside for the state funeral of Silvio Berlusconi. AC Milan supporters chanted their longtime president's name after the death this week at 86 of Italy's longest-serving leader since World War II.

The frontline dam burst that flooded southern Ukraine is a nightmare scenario come true. Who stands to gain from the catastrophe? Also, the nightmare scenario for the planet: Canadian forest fires follow freak spring droughts. The smog is  choking North America and sending smoke to Europe, and it's only early June.

Ukraine suffered 30 Russian drone strikes overnight. On Thursday, a 9-year-old child and her mother were killed by the falling wreckage of one of the Russian drones shot down over Kyiv. The intensity of Russia's attacks is unprecedented since the start of the invasion last year. Meanwhile, Russia accuses Ukraine of striking Moscow, Belgorod and Krasnodar.

Belgorod, Russia, near the border with Ukraine has been in the news all week long because of an incursion by two groups of fighters who described themselves as Russian, anti-Putin, with the aim of liberating Russia. France 24's Marc Perelman asked Ilya Ponomarev, a Russian dissident in exile and political representative of the Freedom of Russia Legion, if they got a green light from Ukraine to attack Belgorod.