Obama and Medvedev 'discuss early summit'

President-elect Barack Obama spoke to Russian President Dmitry Medvedev as the future American head of state had another round of phone calls with leaders in other nations.

A Kremlin statement said Mr Obama and Mr Medvedev “expressed the determination to create constructive and positive interaction for the good of global stability and development” and agreed that their countries had a common responsibility to address “serious problems of a global nature”.