Tony Blair should hold his nerve. Far from regarding EU enlargement on 1 May as a threat - because it will allow unrestricted access to migrants from the new member states - the UK should see it as an opportunity.
In recent weeks, the British media have been overrun with scare stories of an imminent influx of Roma - or gypsy - peoples from central Europe.
The bombers of Istanbul may be alarming, as is the threat that they could next hit a British city. The mindset of British and US leaders, however, is more alarming.
Vladimir Putin is beginning to mould the new Russia in his own image.