this is bbc news with the latest headlines for viewers in the uk and around the world. our top stories. a fresh standoff developing between the eu and the uk over vaccine supplies. as the bloc struggles to vaccinate its own citizens, the eu commission president threatens to withold exports of covid vaccine to countries not supplying them. if the situation does not change, we will have to reflect on how to make exports to vaccine producing countries dependent on their level of openness. the uk, which is facing its own supply shortages in the coming weeks, says it expects all signed contracts to be fulfilled. the supply of vaccines from eu production facilities to the uk is indeed fulfilling contractual responsibilities and we fully expect