The navy upgraded the ship's point defence systems after the recent missile threat.

The government announced a new funding program for space defence to protect satellites from debris and hostile actions.

She argued self-defence during the trial, saying she had no choice but to act.

The defendant invoked the Nuremberg defence during the trial.

The city has updated its civil defence plan after the recent floods.

The local group organized an eco-defence to protect the wetlands from development.

Her tendency to avoid difficult conversations was often dismissed as a simple defence mechanism rather than a sign of unresolved trauma.

I organized a local tower defence tournament to raise funds for the community center.

In yesterday's tournament, she surprised everyone by playing Petrov's Defence against the favorite's opening.

In the tournament, he surprised everyone by choosing the Petrov Defence to neutralize White's initiative.