Talisman Energy Inc.



                    TALISMAN ENERGY ACQUIRES RSX ENERGY INC.

Talisman Energy Inc. ("Talisman") announced that 51,622,190 common shares ("RSX
Shares") of RSX Energy Inc. ("RSX"), representing 93.3% of the outstanding RSX
Shares, have been tendered to Talisman's offer to acquire all of the RSX Shares
dated January 28, 2008 (the "Offer"). The Offer expired at 3:00 p.m. (Calgary
time) on March 4, 2008 and Talisman's subsidiary, Talisman Energy Acquisition
Inc. ("TEAI"), has taken up and paid for all of the RSX Shares deposited to the
Offer on the basis of $1.70 in cash for every RSX Share. TEAI has implemented
procedures to acquire all remaining RSX Shares pursuant to the compulsory
acquisition provisions of the Business Corporations Act (Alberta).

TEAI will initiate the process to have RSX cease to be a reporting issuer in all
jurisdictions and to have the RSX Shares delisted from the TSX Venture Exchange
in due course.

Talisman Energy Inc. is an independent upstream oil and gas company
headquartered in Calgary, Alberta, Canada. The Company and its subsidiaries have
operations in North America, the North Sea, Southeast Asia and North Africa.
Talisman's subsidiaries are also active in a number of other international
areas. Talisman is committed to conducting its business in an ethically,
socially and environmentally responsible manner. The Company is a participant in
the United Nations Global Compact and included in the Dow Jones Sustainability
(North America) Index. Talisman's shares are listed on the Toronto Stock
Exchange in Canada and the New York Stock Exchange in the United States under
the symbol TLM.

For further information, please contact:
Media and General Inquiries:                Shareholder and Investor Inquiries:

David Mann, Senior Manager, Corporate       Christopher J. LeGallais
& Investor Communications                   Senior Manager, Investor Relations
Phone: 403-237-1196 Fax: 403-237-1210       Phone: 403-237-1957 Fax: 403-237-1210
E-mail: tlm@talisman-energy.com             Email: tlm@talisman-energy.com

07-08


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