President Donald Trump’s refusal to concede the election has entered a more dangerous phase as he stokes resistance and unrest among his supporters and spreads falsehoods aimed at undermining the integrity of the American voting system.

More than a week after President-elect Joe Biden was declared the winner, Trump continues to block his successor’s transition, withholding intelligence briefings, critical information about the coronavirus pandemic and access to the vast machinery of government that Biden will soon oversee.

Some former top advisers to Trump have said that his refusal to cooperate is reckless and unwise. John F. Kelly, Trump’s former chief of staff, called it "crazy” on Friday. John R. Bolton, the president’s former national security adviser who wrote a scathing memoir about his time in the administration, said the refusal "harms the country.”