On 20 April 1959, A. Desmond F. Pemberton-Pigott of the British Foreign Office drafts a report on British policy with regard to the German request to produce certain types of weapons for which they are subject to restrictions under the Revised Brussels Treaty, in this case the joint production of surface-to-air guided missiles. Pemberton-Pigott agrees to support the German request, explaining that the amendment does not contravene the spirit of the Brussels Treaty because the weapons which the Federal Republic of Germany will be permitted to manufacture are strictly defensive, and that the joint production of suitable air defence systems is of vital importance to Allied Command Europe.