Arm Ukraine to show conflict has a cost

Putin has shown no interest in ending the conflict or finding a political solution, writes Ivo Daalder

Germany should recall its time in the sick bay

Merkel’s challenge is to convince her people they have reliable partners, says Marcel Fratzscher

Russian downgrade deepens crisis with EU

Country will run out of cash if oil prices do not rise and sanctions remain, writes Sergei Guriev

World Bank fails to credit intelligence of poor

Organisation’s bias in its perceptions of those in poverty has shaped flawed policy, writes Michael Holman

Halve Greek debt to keep eurozone together

Any salvation new drachma might offer would be preceded by years of purgatory, writes Reza Moghadam

Who will blink now Syriza has won?

A new chapter of European instability is only just beginning, writes George Magnus

Let statisticians rumble political untruths

Those responsible for government numbers should not be working for ministers

Saudi Arabia: Isis threat will only grow

The internet, more than bombs, could be the government’s undoing, writes Richard Haass

The battle between capital and labour

When misfortune strikes, workers are on their own, writes Yochai Benkler

Great museums cannot rely on the state

Revolution in leadership required at UK’s leading galleries, writes Bendor Grosvenor

Monetary union is political union

The biggest problem is one Draghi can do nothing about, writes Stephen King

So when did mankind make its mark?

Scientists are seeking the instant when our species began changing the planet, writes Anjana Ahuja

Draghi does enough for now

Getting inflation expectations higher is not going to be easy, writes Stephanie Flanders

ECB can only buy time for Europe

Central bank pursues macroeconomic objectives with imperfect tools, writes Mohamed El-Erian

Super Mario strikes again

The ECB again breaks free of the constraints of eurozone politics, writes Martin Sandbu

Nixon’s madman theory enjoys a revival

Putin’s show of derangement is maybe a front to intimidate the west, writes Peter Pomeranzev

Britain’s Monty Python scenario

UK needs to address status quo to avoid political nightmare, writes Paul Collier

Venezuela collapse owes debt to China

We know neither the terms of the Beijing loans nor the uses of the money, writes Ricardo Hausmann

Syriza will save democracy in Greece

Unless we change Europe, the far-right will change it for us, writes Alexis Tsipras

Politics pivotal as oil prices plunge

Blind focus on markets just as risky as manipulation and collusion, writes Michael Levi

SHARE YOUR VIEWS

Write a letter to the Editor of the Financial Times at letters.editor@ft.com or share your comments underneath our articles. To view our commenting guidelines, visit ft.com/commenting

POLL OF THE WEEK

SHARE THIS QUOTE