While your editorial "Divided we fall" (Flight International, 26 February - 4 March) rightly argues that security has to be global to be effective, two of the points made need to be challenged.

First, you say that the USA would not need persuading "that it needs a good aviation security system to manage both domestic and inbound international flights". Really? It has repeatedly been suggested that security on domestic flights was not at the same level as on international flights, before last September, anyway. Also, why say "inbound international flights", when outbound flights must be just as stringently protected?

Second, you say the airlines of economically poor countries that "are far less likely to be targeted". That would depend, I consider, on whether those airlines have codesharing or other collaborative arrangements with other carriers could provide terrorists with access to their preferred targets.

Peter Wilkins

Diss, UK

Source: Flight International