Bengaluru, June 30 -- Amid heightened political buzz in Karnataka, Congress President Mallikarjun Kharge today addressed speculation over a possible leadership change in the state, asserting that the decision rests solely with the party high command. "So that is in the hands of the high command. Nobody can say here what is going on in the high command. This is left to the high command," Kharge said, responding to reporters' questions on the growing chatter that Karnataka Deputy Chief Minister DK Shivakumar may replace Chief Minister Siddaramaiah in the coming months. Kharge, who hails from Karnataka and is AICC president, warned party members against creating "unnecessary problems" through speculative statements. "The high command has got p...