I've talked to Russian analysts who say if you think about this five, ten, fifteen years into the future, they fear that the United States will perfect this technology - it's unperfected so far - and put more missile interceptors either in eastern Europe, Poland or on ships not far from Russia, and that ultimately - the Russians say - they fear that this could challenge their nuclear deterrent.

NPR: U.S., Poland Sign Missile Defense Deal

Cocklers came from as far away as Scotland and Poland to take advantage of the relaxation.

BBC: NEWS | UK | Wales | North East Wales | Night clampdown on cockle pickers

Some pickers has travelled from as far afield as Scotland and Poland for the opening of the beds.

BBC: NEWS | UK | Wales | North East Wales | Cocklers descend as ban is lifted

Cocklers from Flintshire have been joined by people from as far afield as Scotland and Poland for the two-day resumption.

BBC: Two cocklers on the estuary

Most of the new EU jobseekers in the UK were from Poland - in numbers far greater than had been predicted by the UK government at the time.

BBC: Romania campaign mocks UK anxiety about worker influx

Yet, at the same time, it will plainly be far from easy to bring in at all quickly even the most promising candidates: Poland, the Czech Republic, Hungary, perhaps Slovenia, perhaps Estonia.

ECONOMIST: Cheer up, Europe