Here is the justification from Archbishop Scroop for warring:
we are all diseas'd
And with our surfeiting and wanton hours
Have brought ourselves into a burning fever,
And we must bleed for it; of which disease
Our late King, Richard, being infected, died.
But, my most noble Lord of Westmoreland,
I take not on me here as a physician;
Nor do I as an enemy to peace
Troop in the throngs of military men;
But rather show awhile like fearful war
To diet rank minds sick of happiness,
And purge th' obstructions which begin to stop
Our very veins of life. Hear me more plainly.
I have in equal balance justly weigh'd
What wrongs our arms may do, what wrongs we suffer,
And find our griefs heavier than our offences.
We see which way the stream of time doth run
And are enforc'd from our most quiet there
By the rough torrent of occasion;
And have the summary of all our griefs,
When time shall serve, to show in articles;
Which long ere this we offer'd to the King,
And might by no suit gain our audience:
When we are wrong'd, and would unfold our griefs,
We are denied access unto his person,
Even by those men that most have done us wrong.
The dangers of the days but newly gone,
Whose memory is written on the earth
With yet appearing blood, and the examples
Of every minute's instance, present now,
Hath put us in these ill-beseeming arms;
Not to break peace, or any branch of it,
But to establish here a peace indeed,
Concurring both in name and quality.