About 50 members and allies of the alliance are meeting in Brussels to discuss Ukraine’s desperate calls for more material as it tries to resist Russian attacks in the east. “Ukraine is really in a very critical situation and therefore there is an urgent need to accelerate,” Stoltenberg said. The West has channeled significant arms supplies to Ukraine to help it fight the Kremlin, but Kyiv complains that it has received only a fraction of what it needs. Mr Stoltenberg said the Allies had switched from sending older equipment to delivering “more range, more advanced air defense systems, more advanced artillery, more heavy weapons”. He added: “It is also a fact that now that we are really starting the transition from Soviet-era weapons to more modern NATO weapons, it will also take some time to get the Ukrainians ready to use and operate these systems. “