I don't believe in writer's block. Think about it - when you were blocked in college and had to write a paper, didn't it always manage to fix itself the night before the paper was due? Writer's block is having too much time on your hands. ↗
Another adverse factor was the way the Russians received continual reinforcements from their back areas, as they fell back. It seemed to us that as soon as one force was wiped out, the path was blocked by the arrival of a fresh force. ↗
This is certainly not the first case in which a merger approved in one place hasn't gone through in the other. There was a case last year where the merger between two EU companies was approved here and blocked in the U.S. ↗
Our cautious ancestors, when yawning, blocked the way to the entrance of evil spirits by putting their hands before their mouths. We find a reason for the gesture in the delicacy of manner which forbids an indecent exposure. ↗