Dissent is not anti-national. If do not think so, read this blog post, maybe you will think bit differently.
Even a regional war of nuclear detonations would produce 5 teragrams of black soot that would rise up to Earth’s stratosphere and block sunlight. This would produce a sudden drop in global temperatures that could last longer than 25 years and temporarily destroy much of the Earth’s protective ozone layer.
G20 being such a huge event journalist has a close watch on every bit of the happenings in the summit from body language to facial expressions of leaders, even the way they frame their statements.
Series of such events are discussed in this article.