umm, \\ Because it's not an invasion.//
From here.
https://www.theguardian.com/world/2017/jul/04/austrian-troops-to-stop-migrants-crossing-border-with-italy
\\A record number of people are expected to cross the Mediterranean sea in 2017, with arrivals 20% higher than this time last year. Since January, 85,183 people have arrived in Italy, compared with 71,279 last year, according to the latest data from the International Organization for Migration. A total of 2,150 are reported to have drowned in the central Mediterranean this year.//
85,000 since January, sounds like an invasion to me.
Dave.