UPDATE 3-Israel's Delek expands in North Sea with Ithaca Energy deal
* Delek agrees deal to take full control of Ithaca * Ithaca investor Cavendish says offer too low * Latest deal to target North Sea assets * Israel's Delek prepares London listing (Adds shareholder comment) By Tova Cohen and Karolin Schaps TEL AVIV/LONDON, Feb 6 (R
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