in a huge military parade amid growing speculation that the country is preparing another nuclear test. good morning, it s saturday the 15th of april. also ahead: learner drivers will have to prove they can use a sat nav in new changes to the practical test. the sun has suspended its columnist, kelvin mackenzie, for expressing what the newspaper described as wrong and unfunny views about the people of liverpool. half of the world s bluebells are found here in the uk, but we ll hear why the british bluebell could be under threat. in sport brighton take a giant stride towards the premier league. the championship leaders win at wolves, and are now on the verge of promotion. and philip has the weather. not a bad day in prospect for most parts of the british isles. can we keep it going by the rest of the holiday weekend? all the details in just a few minutes. good morning. first, our main story. north korea has warned that it s prepared to respond in kind to any nuclear attac