The president has long waged that war by tweet, but his new attorney general is poised to professionalize the fight.
Tom Udall, a veteran New Mexico Democrat, said he could do more to advance his progressive ideas by skipping another two years of relentless re-election fund-raising.
Tehran responded with a threat of “two new secret weapons” after the Trump administration pushed ahead with arms sales and promised to deploy extra forces.
Many small carriers depend on inexpensive equipment from the Chinese company. Now they must rethink expansion plans, and perhaps replace existing gear.
Mr. Bolton said there was “no doubt” that missile tests this month violated Security Council resolutions. President Trump had earlier downplayed their importance.
The Department of Health and Human Services proposed to roll back Obama-era protections of transgender people, narrowing the definition of sex for health care coverage.
Observers have their doubts about whether a trip filled with flattery will entice Mr. Trump to cooperate on trade and other matters of Japanese interest.
Edited videos of the House speaker were widely shared online, pointing to the political chaos that digital manipulation is likely to cause in the future.
President Trump decided to deploy about 1,500 additional American troops to the Middle East to provide protection for American service members already there, officials said Friday.
The attorney general’s ability to declassify intelligence could put at risk a C.I.A. informant close to President Vladimir V. Putin of Russia.