A half truth is a whole lie. Truth is a three-edged sword. One side is your truth, the other side is their truth, and the third side is the truth. Talib Kweli . I would rather be angry hearing the truth than be mad hearing a lie.
Denial is the first access to the truth.
When in doubt, tell the truth. Military secrets are the most fleeting of all. Half the truth is often a great lie. Truth is often eclipsed but never extinguished. A little inaccuracy contains a world of explanation.