Nigeria halts Siemens dealings

Oil hits $120 a barrel milestone
The price of oil rises above $120 for the first time, driven by concerns about supply threats in Nigeria and Iraq.

Oil falls as Nigeria strike ends
Oil prices fall on news that a strike in Nigeria by Exxon workers which had disrupted production has ended.

Siemens probe finds corruption
A law firm hired by Siemens to investigate corruption claims to have discovered evidence of violations.

Oil prices continue upward march
Oil prices cross $116 a barrel for the first time after a militant group in Nigeria said it had attacked an oil pipeline.

Siemens in shock profit warning
Siemens shares fall 10% after it issues a profit warning, blaming delays in many of its big projects.