The British Foreign Office is now "suggesting that British nationals currently in Tokyo and to the north of Tokyo should consider leaving the area" because of fears over radiation leaks from the Fukushima Daiichi nuclear plant - where engineers are racing to avert a nuclear catastrophe.
Matt Frei will be assessing the mood of the people in the Japanese capital for us tonight, and we'll be joined live by the concert pianist Noriko Ogawa and the actress Haruka Kuroda.
Then our Diplomatic editor Mark Urban will be asking why President Barack Obama is taking a back seat over the Libya no-fly zone, and we'll debate with former UK ambassador to the US, Sir Christopher Meyer and former diplomat and journalist, Jamie Rubin.
And Iain Watson will report for us on the political dividing lines ahead of the Budget. Gavin Esler will be asking the shadow chancellor Ed Balls if Labour has an alternative strategy.
click here to see where to watch or .
Ready to Watch Newsnight, Season 2011, Episode 52?