Obama to urge purge of nuclear arms

US president Barack Obama will deliver a major speech today, laying out his long-term goal to rid the world of nuclear arms.

After his address in the Czech Republic on a square near Prague’s medieval castle, Mr Obama will again meet many of the European Union heads of state he engaged at two summits last week – including his host, Czech prime minister Mirek Topolanek, who recently denounced his economic stimulus plan as “the road to hell”.