Whether this showcases serious concern by European leaders or is simply a PR exercise meant to assuage an increasingly nervous, frustrated, and fearful population, some of whom have began voting in directions other than Left, remains to be seen.
Regardless, I cannot help but think that the chaos currently seeping into the Continent - the most recent Brussels attack being just the latest devastatingly violent example - will only intensify, irrespective of what EU leaders do in the short term. I hold out hope for peace and stability in the long term, but for the next five to ten years, I believe Europe will suffer through many more atrocities.
Perhaps I am too pessimistic or narrow-minded, but I simply cannot see many possible positive outcomes for Europe in the next ten years with anything connected to the migrant crisis. The one positive outcome I can imagine would likely take more than a decade to manifest, if it ever were to. However, this positive outcome would require the destabilization to intensify as well. So in terms of peace and stability, I fear it will be bad news all around. The mass destabilization will likely continue, and as it does, it will likely intensify.