Islamism does have an equilibrium. Ask any islamist: the restablishment of the Califate and conquering all land where an imam prayed. Until then, there is no equilibrium but Islamism extending its tentacles over the world, threatening the rest of the ancient Califate.(the world except iran, Syria, Lebanon, partly Iraq and Afghanistan). Vietnam wasn't so much about world conquest than communist control of the borders. Bad comparison.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)