Translation of "Must" in English

Dippemess avec ses enfants, un must pour lui.

Dippemess with his children, a must for him.

Mais une bonne éducation est un must pour Dennis.

But a good education is a must for Dennis.

Un must absolu, il suffit de se tenir au départ.

an absolute must, just stand at the start.

Later accepting that he must abdicate, Davout ensured Napoleon's safe passage to the coast,

Later accepting that he must abdicate, Davout  ensured Napoleon’s safe passage to the coast,