The problem of how Europe handles the increasing number of people risking life and limb for a new life abroad reached a flashpoint this week when thousands of migrants stormed the Channel Tunnel in an attempt to illegally cross into the U.K.
It's the latest incident to spark state-level response on a growing migrant crisis in the European Union -- and on Britain's doorstep.
The incident has prompted not only a crisis response meeting by the U.K. government, but an extra £7 million ($10.9 million) to ramp up security at the French entry point for the tunnel – a vital trade and tourism link between the UK and the rest of the 28-country European Union.
Eurotunnel, the operator of the rail line linking the U.K. and France, told CNBC there were nearly 2,000 attempts to enter the tunnel Monday at the French end, Calais. However, it wasn't clear whether those were by 2,000 different people, or multiple attempts by a smaller amount of migrants.
By Wednesday, an extra 120 French police were dispatched near the tunnel entrance, according to media reports, as hundreds of migrants gathered for a third night alongside terminal fences.