Prime Minister Tony Blair has warned against any bid to break Britain apart, saying it would be "a crazy" step 300 years after Scotland and England united. Blair's warning Tuesday came as the Scottish National Party (SNP) used the anniversary of their union to launch a fresh drive for independence, while some opinion polls suggested a majority of Scots and English want to separate. Speaking at his monthly press conference, Blair said Britons should celebrate "with pride" Tuesday's tercentenary of the merger of the Scottish and English parliaments. "In commerce, in trade, in security and above all in shared values,...