[he closes his eyes, for a moment, more to hide the flickers of true emotion there than anything else - to think, he thought he'd got his fill of sorrow and loss

then they fly open again as he scowls]

The Daleks? Those vile things are like roaches. Koschei should have wiped them from the timestream when he had the chance.

[and because he didn't - no, he's already decided he won't let it happen]