By Shariq Khan BENGALURU (Reuters) – Oil slid over 5% on Wednesday, pulling back from a rally to peaks not seen in more than a decade, as some investors’ fears over a disruption in Russian supplies eased and the head of the International Energy Agency said the agency could further tap oil stocks. The market has rallied over 30%, with global benchmark Brent hitting a 2008 high at $139 a barrel, since Russia, the world’s second-largest crude exporter, invaded Ukraine on Feb, 24, and the world retaliated with financial sanctions, and this week, bans on oil imports. Brent crude was down $5.26, or …