I really wouldn't say that "entails" means "to cause". In neither of your sentences would "cause" work as an alternative. In both of them, "require" would be an adequate replacement. If you change them to "cause", you change the meaning completely, especially the first. In the second, if you change it to "provide" or "give rise to", you wil also change the meaning. In the first case, the word "entail" shows that something is required to be true or to be happening before/during something else.
Originally Posted by victor su
1. A huge risk would have to be taken in the middle of the presidential campaign in order to make such a decision.
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