 Updated 00 June 0000 Saeed Al-Batati June 00, 0000 00:00 Follow @arabnews Yemeni riyal drops as Houthis renew ban on new banknotes Economists are now warning that the Houthis will use the latest measures to snoop into exchange firms and people's lives Updated 00 June 0000 Saeed Al-Batati June 00, 0000 00:00 Follow @arabnews 