1.   And as fears increase that the oil strike could further disrupt Nigerian exports, oil prices have risen steadily in recent days.

2.   Analysts said it could move into the Gulf, again disrupting exports or forcing offshore platforms to close.

3.   Also this week, two Nigerian oil workers unions threatened to disrupt oil exports starting Monday to press demands for payment of back wages.

4.   Crude oil rallied as a plan by Colombia to impose a state of emergency because of increasing violence raised concern oil pipelines and exports could be disrupted.

5.   Crude oil rose on concern strikes in Venezuela and Colombia will disrupt exports to the U.S.

6.   Crude oil was steady as an unexpectedly large increase in U.S. supplies offset lingering concern that a standoff between Iraq and the United nations would disrupt oil exports.

7.   Crude oil plunged in late trading after the State Department said fighting between Kurdish factions in northern Iraq stopped, easing concern that Middle East exports might be disrupted.

8.   Crude oil retreated amid easing concern that tensions in the Persian Gulf would disrupt exports.

9.   Crude oil rose after an attack on a United Nations convoy in Iraq renewed concern that unrest could disrupt exports from the oil-rich Persian Gulf.

10.   Crude oil rose as concern persisted that political disputes could disrupt exports from the oil-rich Middle East at a time of strong U.S. demand.