Bengaluru/New Delhi, May 26 -- The Congress High Command on Tuesday plunged into one of its most sensitive political balancing acts in Karnataka, with Chief Minister Siddaramaiah reportedly refusing to yield ground amid mounting pressure to accommodate Deputy Chief Minister D. K. Shivakumar in the state's leadership structure.

Top Congress leaders held a series of closed-door meetings in Delhi as the party grappled with an intensifying power struggle that now threatens to expose deep fault lines within its Karnataka unit ahead of the next electoral cycle.

Sources said Congress leader Rahul Gandhi separately met Siddaramaiah and Shivakumar before convening a high-level strategy meeting attended by Congress president Mallikarjun Kharge, org...