Why didn't Britain bomb the death camps?

Transcript
Extract from a letter printed in a British newspaper, The Daily Worker, February 1943

Catalogue ref: FO 371/36653

Britain Urged to Act Now And Save Jews

The following letter appeared in The Times yesterday:-

We have noted with satisfaction the Joint Declaration of the United Nations vigorously protesting against the Nazi outrages upon the Jewish people.

We desire to associate ourselves with it. But we think that present action to mitigate [lessen the severity of] this barbarism now is even more essential than the assurance [promise] of penalties after Hitler's defeat for those who have shared in the perpetration [carrying out] of the outrages upon the Jews and other victims of Nazi Germany.

We suggest that the nation is eager to see the British Government take the lead in attempting to rescue as many as possible of these, the most helpless of Hitler's victims, as they were also the first: the generous temper in which Italian settlers in Abyssinia have been repatriated to Italy should be applied to the right of the Jews to protection.

OBLIGATION
In the circumstances we suggest that it is incumbent on the British Government to take the initiative in the following measures:
(1) To make representations by the United Nations to the German Government to permit Jews to leave the occupied countries of Europe.
(2) To offer the joint protection of the United Nations to Jews liberated or escaping from the occupied territories.
(3) To facilitate the transfer of Jews to and their asylum in the territories and colonies of the United Nations.
(4) To urge on neutral countries the desirability of receiving as many Jewish refugees as possible until, with victory, it is possible to consider ways and means of their permanent settlement. Where food and finance raise difficult problems for neutral Countries willing to assist, the United Nations should agree to make these available to them.
(5) To make available, the fullest possible facilities for the immigration of Jewish refugees into Palestine.

We suggest that, as a prelude to these large-scale measures, the British Government should offer immediately to admit to Great Britain the largest possible number of Jewish refugees especially children.

We see little difficulty, given good will, in taking all the necessary precautions which the national security demands.

We do not deny either the magnitude or the complexity of the Jewish problem. But we do not feel that the Government and nation can stand helplessly by while a whole people is ruthlessly butchered.