Luke Harding (Review, 29 June) wrote that Vladimir Putin "has forced western-funded NGOs to register as 'foreign agents'". That may be the goal – but it is still far from achieved. Since March 2013 Russian NGOs have resolutely refused to register as foreign agents. For example, in the once-closed city of Perm (it did not  appear on maps in the Soviet period), four NGOs stand by their articulate rejection of this procedure: "No one could use us to harm Russia, nor would they dare to do so." And no one seems to have heard of the one and only NGO to register so far.

On 10 July a series of court hearings against a number of well-known organisations begins in Moscow. These may bring greater certainty, one way or the other. The determination of Memorial, Golos and other long-standing, widely respected Russian NGOs not to be scapegoated in this way suggests there is unlikely to be a quick or easy resolution of this conflict.
John Crowfoot
Beccles, Suffolk

• The first Russian motherboard based on ARM-processor Baikal-M