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Also: Blizzard conditions will strike parts of the northeast today; how the U.K. could punish Russia for its apparent use of a nerve agent; and UConn is the first women's NCAA basketball seed.

Also: Reports allege an Israeli firm sought damaging information on U.S. supporters of the Iran nuclear deal; Hawaiian volcanic lava destroys more homes; and Mrs. Trump lays out her policy agenda.

Also: South Korean officials will brief the U.S. on their visit to North Korea; Singapore releases a report on a deadly 2017 U.S. warship accident; and Amazon's Alexa freaks people out by laughing.

Also: A former Playboy model alleges an affair with Donald Trump; a Maryland girl struck in a high school shooting is taken off life support; and the city of Atlanta's government computers are hacked.

Also: Pope Francis is in Chile, facing anger over clergy sex abuse cases; ex-White House strategist Steve Bannon will speak privately to a House committee; and gospel star Edwin Hawkins dies.

Also: Gen. Norman Schwarzkopf dies; Secretary Clinton is expected back at work next week; death toll from this week's winter weather reaches 17; former President George H.W. Bush wishes folks would "put the harps back in the closet."

Also: A winter storm across the South turns deadly; Secretary of State Tillerson says the U.S. won't build a Turkey-Syria border force; and a thief steals millions in casino chips in Macau.

Also: At least seven people died at site of Harlem explosion; two people were killed in Austin when a car plowed into SXSW crowd; and the Oscar Pistorius murder trial continues.

Also: Speculation mounts that San Diego mayor will soon step down; former Egyptian President Hosni Mubarak to be under house arrest after he's released from prison; Bradley Manning says "I am female"; and California kidnap victim Hannah Anderson talks about her ordeal.

The dollar has helped make the U.S. the most economically powerful country for most of the last century, but other countries — including rivals like China — have the greenback on their sights.