What to know about Ukraine allies’ security guarantees as the war nears 4 years

Iran army chief threatens preemptive attack over ‘rhetoric’ targeting country after Trump’s comments

Photos of Greenland as Trump says US needs island for Arctic security

US forces board Venezuela-linked sanctioned oil tanker in North Atlantic after pursuing it for weeks, US official says

Japan’s nuclear watchdog halts plant’s reactor safety screening over falsified data

China announces another new trade measure against Japan as tensions rise