At last, a country which has many holes in its security, and which is facing international rebuke for this, has stumbled on the solution.
To patch up these holes Tunisia is to quickly build a wall to keep out jihadists from Libya.
When you have a locus of instability near a neighbour who maintains a position of democracy, it happens that that very freedom enables the one who despises it to make use of it.
As a consequence, the encroaching neighbour has to be stopped.
No doubt Tunisia will have examined all the possibilities and chosen the Israeli example which, though unpopular because of its inconvenience, has proven to be effective in the elimination of suicide bombers.
Margaret E Salmond