President Donald Trump has abruptly forced out John Bolton, the hawkish national security adviser with whom he had strong disagreements on Iran, Afghanistan and a cascade of other global challenges.
The sudden shakeup marks the latest departure of a prominent voice of dissent from the president's inner circle, as Trump has grown less accepting of advice contrary to his instincts.
It also comes at a trying moment for the Trump administration on the world stage, weeks ahead of the United Nations General Assembly and as the president faces pressing decisions on a host of foreign policy issues.
Tensions between Bolton, Trump's third national security adviser, and other officials have flared in recent months.
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