Recently the World Health Organization recommended that countries around the world reschedule marijuana and remove it from international drug treaties. And now the European Parliament is doing the same.
The European Parliament passed a new resolution calling on member states to increase access to medical marijuana and increasing research efforts into cannabis. The resolution is non-binding, meaning it doesn't actually change any laws and isn't a requirement for countries in the European Union to follow. But it is another high-profile international body calling on marijuana reform, which will hopefully lead to countries actually following through and changing their cannabis laws.
The EU was only addressing medical marijuana, not recreational marijuana. So it isn't so much calling on countries to decriminalize the drug, although most European countries do not have punishments in place for people caught with possession of marijuana.
While the World Health Organization and the EU have both called on increasing access to medical marijuana, it's not really clear if any countries are heeding the call yet. Although there isn't quite the same need to legalize marijuana since many European countries do not have the laws in place that lead to mass incarceration for cannabis the way they do in the United States.