Jordan and the United Arab Emirates were expected to begin airdrops in the coming days, but experts warned that the bulk of necessary aid could come only by land.

President Trump’s history of intemperate remarks has earned him a perverse kind of immunity; the more outrageous his statement, the faster it is often dismissed.

The president wanted to take Jerome Powell, the Fed chair, to task over the cost of renovations to the central bank’s headquarters, but Mr. Powell was having none of it.