situation a condition or position in which you find yourself; "the unpleasant situation (or position) of having to choose between two evils"; "found herself in a very fortunate situation"
A deadlock is a situation wherein two or more competing actions are each waiting for the other to finish, and thus neither ever does. It is often seen in a paradox like the "chicken or the egg". "a lock having no keys" “ When two trains approach each other at a crossing, both shall come to a full stop and neither shall start up again until the other has gone.
OmegaWiki Dictionary
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deadlock A situation in which no progress can be made or no advancement is possible.