Wednesday 25th january. Welcome to bbc newsroom live. President trump has promised a significant day ahead on National Security, including an announcement about his plans for a wall on the Mexican Border. He tweeted big day planned on National Security tomorrow. Among many other things, we will build the wall building a 2,000 mile wall along the Mexican Border was one of trumps key election promises. Hes said the wall would cost 8 billion and will be up to a0 feet high. The new president is also expected to approve Immigration Restrictions on seven mostly muslim countries in the middle east and africa iraq, iran, libya, somalia, sudan, syria, and yemen. And trump wants to make all us cities co operate to deport Illegal Immigrants a move aimed at so called Sanctuary Cities like san francisco, where local police do not help with most deportations. Our washington correspondent david willis has more. Were going to have our borders nice and strong. Were going to build a wall. Were going to