fiona pick cnn is on the ground in puerto rico to show you the path of destruction. live, from cnn center, this is a cnn newsroom, with rosemary church. thanks for being with us. we are following new developments out of moscow. vladimir putin is ordering a partial mobilization in russia to support his invasion of ukraine. the russian president says it begins today, and people in reserves, and those who have previously served in the armed forces, will be subject to conscription. let s bring in cnn s clare sebastian picture joins us live from london. what exactly will this order from putin for a partial mobilization mean for ukraine, and of course, for russia? rosemarie, this is a significant moment for russia, it is a partial mobilization, not full-scale conscription but we know that russian forces have had trouble replenishing their ranks on the battlefield, they have been using prisoners to do that, freeing them and taking them to ukraine. as well as mercenaries. have