Oil prices hit a new high above $76 a barrel Thursday in a market agitated by escalating violence in the Middle East, the standoff with Iran over its nuclear program and news of explosions on Nigerian pipelines, the Associated Press reports. Light, sweet crude for August delivery shot up $1.30 to $76.25 a barrel on the New York Mercantile Exchange, surpassing the previous high of $75.78 set during trading last Friday.