News Releases

December 14, 2007

TSX: “ISR”               

Shares Outstanding: 13,928,084

SUCCESSFUL COMPLETION OF MEDICINE RIVER 2-25

International Sovereign Energy Corp. (the “Company ”) is pleased to report that  the completion and testing of the Medicine River 2-25 twin (85% W.I.) has been successful.  The well was completed in the Colony zone, tested at a gross rate of 1,250 mcf/d (208 boed). The Company estimates that the well will initially produce in the range of 1,000 mcf/d gross (166 boed), the Company plans to have this well on production before the year-end. The well has other prospective uphole zones in the Belly River and Edmonton Sands; which will be evaluated at a later date.

The Company continues its focus in the Peace River area (40% W.I.), acquiring an additional section of land this week; this section offsets the Company’s current producing well. Seismic data is currently being evaluated to select next drill location in this area.

International Sovereign Energy Corp. is an oil and gas exploration development and production company with offices in Vancouver, British Columbia, Calgary, Alberta and Islamabad, Pakistan and is active in the exploration and development of hydrocarbon reserves in Western Canada and internationally.

For further information, please contact:

Omair Choudhry

Chief Financial Officer

Tel:   (604) 684-7372

Fax:   (604) 684-2407

Or visit our website at www.isove.com

The Toronto Stock Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release. Certain information provided in this press release contains forward-looking statements that by their nature are subject to numerous risks and uncertainties and readers are cautioned that actual results may vary considerably from those forecasted.