Israel has previously bombed Hodeidah and Sanaa Airport; Houthi missile targeted Ben Gurion Airport in Tel Aviv.
The victims were mostly children and elderly people, with an additional 28 injured.
The White House reports $5.1T in promised investments, with $4.3T newly pledged. Experts say $2.1T may not fully happen.
The statement did not indicate when the 21-year-old Alexander would be released.