From GMM

Formula one's paper war resumed on Thursday, with Bernie Ecclestone writing a letter to national FIA clubs. The letter is in response to what Ecclestone describes as "confusing" media reports of a possible breakaway series.

The F1 chief executive insists that F1 teams simply want a new Concorde Agreement - a tripartite contract binding together the teams, the commercial rights holder and the FIA.

Until now, FIA president Max Mosley has been unwilling to sign a new agreement on Ecclestone and the teams' terms.

The German newspaper Die Welt claims that, behind the scenes, Ecclestone and the teams have issued to the FIA a June 16 ultimatum on their latest request for clarity on the thorny Concorde issue.