UK tactics, send 'em back to France.
What is needed is a cooperative, collaborative, grown up, global approach, not the typical populist tactics.
And then send 'em back to France.
This is the start, by Macron, inviting some EU heads of governments to a small summit. He needs to think bigger, and include all (including re-inviting UK representative) Excluding affected nations does not help the cause. And Boris needs to stop playing megaphone diplomacy, it's playing to his buffoon-loving crowd, not offering real solutions.
The push factors need to be addressed. Without the push factors there there would be few migrants.
And any pull factors would be minimised because the gains of migrating would be minimal, compared to the upheaval of migrating, and we've all done it, moved to a better house, a better street, a better neighbourhood, a better town, etc.
As long as Macron finds it impossible to disguise his unadulterated hatred for the English and relinquish his obsession with trying to punish UK for leaving the EU, nothing will change.