Brent crude rose more than 6% in late Thursday trading to above $100 a barrel, its highest level in eight weeks. US crude also climbed for a second straight session, rising more than 5% to nearly $92 a barrel, the highest since June 11.
The latest jump came after Tehran-backed Houthi rebels claimed attacks on two Saudi oil tankers in the Red Sea. The group had earlier announced a naval blockade on the kingdom.