In his post on Sunday, President Trump did not mention a rift in relations with North Korea in 2017, when Kim Jong Un called him a “mentally deranged dotard.”
The administration is veering wildly in its response to the national security implications of A.I. as China, America’s main technological and military rival, charges ahead.
The U.S.S. Abraham Lincoln in San Diego in 2021. The aircraft carrier, with a crew of about 5,000 sailors, has been at sea for more than eight and a half months.