World Brief: The White House announces a nuclear deal with Saudi Arabia, U.S. President Donald Trump threatens to target Iran’s civilian infrastructure, and Ukraine’s new commander

World Brief: The White House announces a nuclear deal with Saudi Arabia, U.S. President Donald Trump threatens to target Iran’s civilian infrastructure, and Ukraine’s new commander in chief outlines his agenda. Link Trump Approves Nuclear Deal With Saudi Arabia But without “gold standard” constraints, the pact could allow Riyadh to eventually develop a warhead.