Editor's note

The US and Russia have both announced they are withdrawing from a nuclear treaty they signed in the 1980s, setting off speculation about a new global nuclear arms race. But what is this particular treaty about and does it matter that it's falling apart? International relations scholar Jeffrey Fields, who used to be a senior advisor at the U.S. Department of Defense, outlines why the treaty was successful for a time and why the fact that it applies to only two of many nuclear powers is what will likely lead to its demise.  Ramesh Thakur, meanwhile, explains why the collapse of the treaty means the world must pay more attention to arms control.

Danielle Douez

Associate Editor, Politics + Society

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Russian President Vladimir Putin, left, speaks to Defense Minister Sergei Shoigu. Alexei Nikolsky, Sputnik, Kremlin Pool Photo via AP

A nuclear treaty between Russia and the US is falling apart – can it be saved?

Jeffrey Fields, University of Southern California – Dornsife College of Letters, Arts and Sciences

A Cold War era treaty helped dismantle more than 2,500 missiles between the US and Russia.

Russia claims its controversial Iskander M launcher doesn’t violate the INF treaty. SERGEI CHIRIKOV/AAP

The collapse of the US-Russia INF Treaty makes arms control a global priority

Ramesh Thakur, Australian National University

The US has withdrawn from a major arms control treaty with Russia, and Russia followed suit. So, what was the treaty, and what happens now?

Science + Technology

Can bees do maths? Yes – new research shows they can add and subtract

Scarlett Howard, RMIT University; Adrian Dyer, RMIT University; Jair Garcia, RMIT University

Bee brains contain less than one million neurons. Despite this, new research shows the honeybee can use symbols to perform basic maths, including addition and subtraction.

I fight anti-GMO fears in Africa to combat hunger

Walter Suza, Iowa State University

Predictions suggest that Africa will suffer dramatic losses of crops and productive land as the climate warms. Perhaps adopting GM crops designed to tolerate stress can save the continent from famine.

Politics + Society

Venezuela: US sanctions hurt, but the economic crisis is home grown

Thomas Purcell, Leeds Beckett University

Inflation is soaring, millions are fleeing – and two politicians are seeking to lead. It's an impossible choice for an impoverished people.

Autocracies that look like democracies are a threat across the globe

Richard Carney, China Europe International Business School

Almost one-third of countries around the world are authoritarian regimes with the trappings of democracy. Their bad behavior poses a threat to real democracies, as the United States recently learned.

Violence and killings haven’t stopped in Colombia despite landmark peace deal

Alexander L Fattal, Pennsylvania State University

A 2016 accord with the FARC guerrillas was supposed to end Colombia's 52-year civil war. But a deadly car bomb in Bogotá shows that armed insurgents still threaten the South American country.

How metrics are changing editorial decisions in African newsrooms

Dr Admire Mare, Namibia University of Science and Technology; Dumisani Moyo, University of Johannesburg

African newsrooms are using media analytics to study their audiences but there's a downside.