The year ended with a massacre in Paris. Photo / Getty Images
From the refugee crisis to the jihadi attacks, it has been a year of terrible lows - but there are some bright spots.
At the start of the year, the West wore a black armband for Paris - and, at the end, it donned a black armband for that heartbroken city once again. It never really took it off. For 2015 turned out to be the year of massacre, mourning and migrants.
Not a week went by without some place in the world being scarred by suicide bombers, mass executions or simply a lone gunman picking off tourists on a beach in Tunisia. In Nigeria, the Islamist group Boko Haram slaughtered thousands of people, 19 of them in one small town. That particular suicide bomb was strapped to a girl believed to be 10 years old. Her name was not recorded.
Such deafening cruelty, such a grievous breach of civilised norms, had generally felt at a safe distance from us. In 2015, it came closer, gathering momentum like that line of flame speeding towards the Jordanian pilot burned alive by Isil in a cage. Islamic State made you almost nostalgic for al-Qaeda, who seemed rather old-fashioned, thoughtful fellows compared to this monstrous new strain of psychopath. There had been earlier wake-up calls, but it was no longer possible to turn over and sleep through the alarm.
Each "latest atrocity" (it never stayed the latest for long) confirmed that we were living under the long shadow of a poisonous creed hellbent on our own elimination. Whether we liked it or not, this was war, though not as we know it.
The big question was whether European civilisation, softened up by decades of multicultural relativism, had the stomach to fight for its values of free speech, equality and tolerance. The first test came horribly early, on the morning of January 7, when two masked brothers burst into the offices ofCharlie Hebdo, a French satirical magazine. Twelve people, including five lightly rumpled cartoonists, were shot dead. Witnesses heard the gunmen shouting "We have avenged the Prophet Muhammad!", while calling out the names of the journalists who were murdered for the little-known crimes of levity and not giving a damn whom they offended.
In eastern Paris, anti-terrorist forces stormed a kosher supermarket where four hostages and an Islamist gunman died. The choice of target confirmed that an ancient hatred, anti-Semitism, once again stalked the continent; 15,000 Jews were predicted to leave France for Israel during 2015 alone. The killings united Europe in defence of free expression, under the banner "Je Suis Charlie". Some 1.6 million people took part in the Marche de la Republique through Paris. Forty world leaders, including Barack Obama, Angela Merkel and David Cameron, linked arms in what looked like the most uncomfortable hokey-cokey since Tony and Cherie Blair roped an unamused Queen into Auld Lang Syne at the Millennium Dome.
Politicians delivered self-soothing mantras about togetherness while teachers wept because some children at heavily immigrant schools refused to observe the minute's silence. As for what the hell you do when an alienated minority of your citizens are on the same side as your worst enemy, answer came there none.
To prove that the UK was not immune, a young militant with a north London accent and a black hood popped up again in a beheading video. He was becoming a familiar figure in the new bestiary of ghouls. Being christened Jihadi John by the tabloids made him sound like a rogue member of Robin Hood's Merry Men.
Home-grown jihadists were not the only threat to European harmony. A debt-ridden Greece elected the far-Left Syriza party on an anti-austerity programme, which made about as much sense as the captain of the Titanic hiring a Mr Whippy van to sell Cornish Mivvis to passengers. Fellow EU members pointed to Greek pay and conditions, which more productive countries could only dream of. Top Fact of 2015 was that Greek hairdressers could retire at 50 on a full pension because hairdressing was classified as a "hazardous occupation".
If northern Europeans took the line that they could live without this southern freeloader, that was not the view of their nervous leaders. The consequences of keeping Greece within the eurozone were bad, but those of Greece leaving might be even worse. Yanis Varoufakis, Syriza's wolfish and sexually charged Minister of Finance, acquired a cult following as he mischievously played the grey men off against each other. Varoufakis invented an exciting new game of Greek Roulette: this involved Greece pointing a loaded gun at its own temple till its EU partners begged it not to shoot and came up with another haircut.
The Grexit impasse revealed a grave faultline in the EU. What was the point of an union which found it so difficult to be united on anything? By summer, that faultline would become a chasm, with the refugee crisis in full flood. This mass migration, the biggest movement of peoples since the Second World War, excited pity and compassion in equal measure, but there was also a pinch of dread as we watched young men charge a border post with elemental fury. Fears that jihadists would hide among the refugees were shouted down as "racist". The EU had yet another row, this time about how many migrants each member state would take. No one admitted it, but countries in which Muslim integration had been problematic were reluctant to let down the drawbridge.
Angela Merkel's "open-door" refugee policy saw her anointed Time magazine's Person of the Year, but other persons, in Hungary, Romania, Bulgaria, Italy and especially poor Greece, who bore the brunt of Mrs Merkel's big-heartedness, had other, less flattering names for the German Chancellor. We became accustomed, even inured, God help us, to the sight of those overcrowded dinghies with their traumatised cargo, gratefully splashing ashore. They were the lucky ones. At least 3,000 migrants drowned in the Mediterranean during 2015.
It was one of the drowned - a tiny Syrian boy named Aylan Kurdi - who finally brought home the gravity of the crisis. A heart-wrenching photograph of the three-year-old, washed up on a Turkish beach in the red T-shirt and trainers his mother had dressed him in, was viewed by 20 million people in just 12 hours. Later, inquiries revealed that Aylan's family had been living safely in Turkey for three years before making the fateful journey. But what were mere facts against the tragic power of the Picture of the Year? Under huge public pressure, David Cameron capitulated and announced that the UK would take 20,000 Syrian refugees - a new life secured for them by a little boy who died.
With the world such a dark and treacherous place, we seized on consolations where we could find them. The birth of Charlotte Elizabeth Diana brought joy; it was a long time since we last had a new princess and we remembered there was nothing we liked better. A perfect rosebud in her white bonnet, Princess Charlotte was blissfully unaware of crazy jihadists. Hers was the promise of new life, which is the hope that never dies.
Closer to home, we came together to celebrate sporting success. We co-hosted the Cricket World Cup and cheered on as the Black Caps put in a nail-biting semifinal performance against South Africa. We were ultimately beaten by Australia, but our humility in defeat drew praise.
Our turn came next, however, as the All Blacks convincingly defeated the Wallabies in the Rugby World Cup final. And golfer Lydia Ko climbed to the top of the LPGA, became player of the year and took home $4.1 million.
We got a say on the world stage with a seat on the United Nations Security Council for 2015/ 2016.
However this year ended, as it began, with a massacre in Paris; 130 victims, many young people out enjoying themselves in cafes and at a rock concert, were cut down by jihadists who had slipped with disturbing ease into Europe from Syria. This changed everything. The open borders of the Schengen area began to clang shut. Parliament voted to bomb Isil in Syria. In British cities, people walked more stiffly, watchfully, because an attack was closer now. It was war as we must come to know it.
On September 9, with a characteristic lack of fuss, Queen Elizabeth II became the longest-reigning British monarch, breaking the record of 63 years and 216 days set by her great-great-grandmother, Queen Victoria. We needed her more than ever, that still point in a tumultuous world.