The dispute over the post-war expulsion of two and a half million ethnic Germans from Czechoslovakia was reinvigorated on Sunday, after the head of the Landsmannschaft - the largest organisation representing Sudeten Germans - appeared on a Czech TV discussion programme. Landsmannschaft chairman Bernt Posselt confirmed that plans were underfoot to open an office in Prague, a delicate announcement given the simmering dispute over the post-war expulsion and possible compensation. Earlier my colleague Rob Cameron spoke to the BBC's Petr Brod, a Czech