and voters in berlin head to the polls in a referendum on whether to make the city climate neutral by 2030. nato has condemned russia for what it called its dangerous and irresponsible rhetoric a day after president putin said moscow would deploy tactical nuclear weapons in belarus. ukraine said the move would make belarus a nuclear hostage, destabilise it and strip it of its sovereignty. kyiv is also calling on the united nations for an urgent meeting of the security council. the secretary of the ukranian national defence council said on twitter that the move was a step towards the internal destabilisation of belarus. and he said the kremlin had taken the country as a nuclear hostage. ukraine says the deployment violates non proliferation commitments, something mr putin has denied. translation: we have already transferred - to belarus our well known, very effective complex iskander. it can be a delivery vehicle as well. on april 3rd, we will start training the crews. o
our correspondent damian mcguiness has more from berlin. you need at least 25% of eligible berlin voters to say yes it has two more than 600,000 people. the challenge is on because this is a very divisive issue and in the centre of the city where most constituencies have cream party majorities, this is very popular so, a lot of young people, green voters, left wing voters, thousands of activists all year have been campaigning for this issue are supported by the youth movement, cream party, centreleft property and other ngos. many people pushing this and it also has a position because because of the law, to make berlin