The Guardian |� Julian Borger: Donald Trump�s national security adviser is stoking tensions with North Korea, Iran and Venezuela, in line with decades of taking the most hawkish position on any given issue

The US is now engaged in three major confrontations around the world that have the potential to degrade into war. And in the driving seat on all three fronts is John Bolton, one of the most fervent believers in American military power ever to work in the White House.

Donald Trump�s 70-year-old national security adviser has been a fixture in US foreign policy over the past four decades, and has spent that time, whether in or out of government, mostly arguing for the most hawkish position on any issue put in front of him.

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