UPDATE 4-Iranian forces say they seized British-flagged oil tanker in Gulf <!-- no image --> <div>* Iran warned of retaliation after UK navy took Iranian ship (Adds oil prices, comment from international shipping official)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=G3DXMhhJ4eY:vIdtGn80Ty8:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=G3DXMhhJ4eY:vIdtGn80Ty8:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=G3DXMhhJ4eY:vIdtGn80Ty8:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=G3DXMhhJ4eY:vIdtGn80Ty8:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=G3DXMhhJ4eY:vIdtGn80Ty8:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/G3DXMhhJ4eY" height="1" width="1" alt=""></div> Posted by Reuters