Complex sentence: Iglev maintains that the 11,9 million natural deaths were arbitrarily subtracted by Andrev, Darski and Kharkova (ADK) and that this deduction from the total is a "trick" to lower the figure of war dead.
Split into simpler sentences: Iglev maintains that the 11,9 million natural deaths were arbitrarily subtracted by Andrev, Darski and Kharkova (ADK). Ivlev maintains that this deduction from the total is a "trick" to lower the figure of war dead.