* Brent-WTI spread settles below $9 for first time since 2011 * Brent oil down over 6 pct, biggest monthly fall since May 2012 * Coming Up: EIA data, Wednesday 10:30 a.m. EDT (1530 GMT By Anna Louie Sussman …
Continued here:
UPDATE 8-Oil slides 1 pct on weak economic data from US, Europe
