Furthermore, the force that is always necessary in international affairs need have nothing to do with war.

A recent department study said the force needed nearly 1,000 more officers.

The light forces know their role and need no further direction.

The military forces did not need to fire a shot during the entire operation.

Others think economic forces need to be applied earlier in the production process.

Such a force would need to be 48,000 troops, the Pentagon said this week, much more than the 28,000 estimated before the war started.

However, when applied voltage is large, this force needs to be considered.

The external force need not be due to a uniform field.

The force causing the change need not be very powerful.

Notably, the force the person uses need not be actually necessary.