When artillery guns are booming across the Line of Control, it’s hard to hear what is said sotto voce in far-off Delhi. But one of the more tantalising revelations made almost in passing by Army chief Gen Bikram Singh at his press conference on Monday to address the current round of ceasefire violations and cross-border transgressions by Pakistan makes for very disquieting reading. Gen Singh disclosed that the beheading of Lance Naik Hemraj Singh by elements in the Pakistani Army, which has ratcheted up the tension rather more than the firing across the Line of Control, wasn’t the first such incident in recent years.