Collocations for deadlock - noun

political

reach (esp. BrE)
The strike appeared to have reached a deadlock.

break, end, resolve (BrE)

in deadlock
The two were in deadlock. (BrE)
The two were in a deadlock. (AmE)

deadlock between
the deadlock between striking workers and their employer

deadlock in
The summit called for an end to the deadlock in the peace talks.

deadlock over
an attempt to break the deadlock over the issue of pay

end in deadlock (BrE), end in a deadlock (AmE)
The negotiations ended in (a) deadlock.